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A variable is simply an unknown value. It can be represented by anything else other than numbers (since they won't be variables). For example, a+1 is a variable in an addition expression, b-c is a subtraction expression with two variables. Expressions need not be made up of only 2 items as well. The next line is a single expression as well:
q-w-e-r-t-y-u-i+o+p-a+s+d+f+g-32h+124j+73k-l+z+2x+c+7v-b+4n-8m
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What do you call the order use to do arithmetic in a numerical expression?
It is known as BIDMAS (UK) or PEMDAS (US) BIDMAS = Brackets, Index, Division, Multiplication, Addition, Subtraction. or PEMDAS = Parentheses, Exponent, Multiplication, Division, Addition, Subtraction. There is no porder between DM/MD and between AS: Division and multiplication are to be carried out left to right. Addition and subtraction are to be carried out left to right.
Why would you use addition to solve a subtraction equation?
because you undo the operation in the equation= to undo subtraction you add
How do you use variable in an addition or subtraction?
well, if you want to add apples to bananas you can't do that it's the same with variables, the coefficients can be different but to add and subtract the variables have to be the same for ex: you can't do 4x+3y because they have different variables you can do 4x+3x because they have the same variables all you do is add the coefficients and keep the variable so you would get 7x
What are the four operations in math that you mostly use?
Addition + Subtraction - Multiplication * Division /
How can you use symbols to write addition and subtraction equations?
to come up with the total
Explain how you know to use a variable in an addition or subtraction expression?
that we can use it
What does the variable represent in an addition or subtraction expression?
it is the number you would use to solve the problem
Do you add before you subtract?
In mathematics, the order of operations dictates that you perform addition and subtraction in the order they appear from left to right in an expression. This means that you should perform addition before subtraction only if addition comes before subtraction in the expression. If addition and subtraction are next to each other, you would perform them from left to right.
Why are multiplication division addition and subtraction used in evaluating expressions?
If they are present in the expression you need to use them to evaluate the expression, if they are not, you don't. You would not use any of them - at least not explicitly - to evaluate sqrt[ln(pi)], for example.
How do you use greatest common factor with addition and subtraction of fractions?
You don't. You use the GCF to reduce the answer once the addition or subtraction is complete.
What do you call the order use to do arithmetic in a numerical expression?
It is known as BIDMAS (UK) or PEMDAS (US) BIDMAS = Brackets, Index, Division, Multiplication, Addition, Subtraction. or PEMDAS = Parentheses, Exponent, Multiplication, Division, Addition, Subtraction. There is no porder between DM/MD and between AS: Division and multiplication are to be carried out left to right. Addition and subtraction are to be carried out left to right.
What is the abacus use for?
addition subtraction multiplication and division
In addition use in sentence?
In addition to his response I vote yes. or I like addition better than subtraction.
Why would you use addition to solve a subtraction equation?
because you undo the operation in the equation= to undo subtraction you add
What type of math does a CPA use?
Basic addition and subtraction mostly.
How is subtraction and addition related?
They both include number and they use your head
How do you use variable in an addition or subtraction?
well, if you want to add apples to bananas you can't do that it's the same with variables, the coefficients can be different but to add and subtract the variables have to be the same for ex: you can't do 4x+3y because they have different variables you can do 4x+3x because they have the same variables all you do is add the coefficients and keep the variable so you would get 7x
