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Addition and Subtraction of Like and Unlike Terms

x+5+3 x-7

Question

x+5+3x-7

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Solution

x+5+3x-7 = 0

add the variables

= x+3x+5-7

= 4x+5-7

= 4x-2

= 4x = 2

x = 2/4 = 1/2

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