42+8+5x=90

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Solution for 42+8+5x=90 equation:



42+8+5x=90
We move all terms to the left:
42+8+5x-(90)=0
We add all the numbers together, and all the variables
5x-40=0
We move all terms containing x to the left, all other terms to the right
5x=40
x=40/5
x=8

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