0
well you would pick up your writing utensil, then draw an equation with a variable AND either a plus or a minus sign. now thats how its done.
Not sure what the person above was getting at but I hope this helps
You can add or subtract like variables just as you would with normal numbers . Like variables means they must be the same so you can add an x with an x but cannot add a x to a y
For example
5x+2x=7x
4x+3y+12x= 16x+3y
4x-2x-y=2x-y
7x-3x-1x-2x= x or 1x
9x+3x -2y+8y= 12x+6y
2x+3x+4y-y+2x-3y=7x
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
Explain how you know to use a variable in an addition or subtraction expression?
that we can use it
How do you solve multi step equations?
Solving • Work backward to isolate the variable and solve the equation.Multi-Step • Use subtraction to undo addition, and use addition to undo subtraction.Equations • Use multiplication to undo division, and use division to undo multiplication.
Why can you use addition to check your subtraction?
Addition is the opposite of subtraction. For example, 24 - 9 = 15. If you want to check your answer, add 9 + 15. It equals 24, so your answer is correct.
What comes first in pemdas addition or subtraction?
d-a-s division-addition-subtraction
What is the inverse of subtraction?
Addition is the inverse of Subtraction. Division is the inverse of Multiplication. and then visa-versa. :-) Addition is the inverse of Subtraction. Division is the inverse of Multiplication. and then visa-versa. :-) the Answer is subtraction
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
When a equation uses addition the variable can be solved by subtraction True or False?
True.
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.
When an equation contains addition can the variable be isolated by performing the opposite process namely subtraction?
Yes.
How do you solve multi step equations?
Solving • Work backward to isolate the variable and solve the equation.Multi-Step • Use subtraction to undo addition, and use addition to undo subtraction.Equations • Use multiplication to undo division, and use division to undo multiplication.
What is the abacus use for?
addition subtraction multiplication and division
Who discovered addition or subtraction?
who discovered addition and subtraction.
Definition of addition and subtraction of binary?
definiton of addition and subtraction
How is addition relaked to subtraction?
Addition is the inverse operation to subtraction.
How addition and subtraction related?
Addition and subtraction are reverse operations.
In addition use in sentence?
In addition to his response I vote yes. or I like addition better than subtraction.
