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You need to do what's called combining like terms.
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If you have (7x+74y-9z+68) + (9q-2x+19z-60), you group them together,
STEP 1: (7x+74y-9z+68) + (9q-2x+3x+19z-60) ===> (7x+3x-2x)+(74y)+(-9z+19z)+(9q)+(68-60)
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Now, we need to evaluate. All we do is mentally remove the variables, but not really. Work as if they were constants, but only for addition and subtraction.
STEP 2: (8x)+(74y)+(10z)+(9q)+(8)
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Finally, remove the parentheses, and for the sake of tidiness organise the variable alphabetically like shown below, and there is your answer:
ANSWER: 9q+8x+74y+10z+8
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoCombine like terms.
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How do you evaluate variable expressions?
To evaluate a variable expression, replace all the variables with numbers and simplify the resulting numerical expression. 3m for m = 9 3(9)=27
How are the order of operations and combining like terms are used to simplify expressions?
They are used to simplify expressions by helping to reduce the numbers that there is
What does simplify variable expressions mean?
It means to replace an expression by another one that is equivalent, but simpler. For example: 3x + 5x can be written as: 8x because of the distributive property.
How do you simplify an expressions?
you use a mathematical formula ...
How will you simplify algebraic expressions?
use a calculator
Which expression is equivalent to 4.8 2.2w-1.4w 2.4?
Lots of expressions are equivalent to it. But for a start, you may want to simplify it, by combining like terms - i.e., add the terms with the variable "w", and separately add the terms without a variable.
What is the definition of equivalen variable expressions?
Two expressions are "equivalent" if they have the same result for any values of the variable or variables.
Why is it important to simplify radical expressions before subtracting or adding and how is adding a radical expression similar to adding a polynomial expression and provide an example?
Why is it important to simplify radical expressions before adding or subtracting? How is adding radical expressions similar to adding polynomial expressions? How is it different? Provide a radical expression for your classmates to simplify..
Expressions that simplify to the same expression or value.?
2+2 = 2*2 = 2^2 all simplify to 4. But there is no special name for the three expressions.
What is the definition of an equivalent variable expressions?
An equation if both expressions are equal
Can expressions have and equal sign with a variable?
Expressions never have equality signs
What Algebraic expressions?
An expression with a variable.
