7x-78=15x+162

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Solution for 7x-78=15x+162 equation: 



7x-78=15x+162

We move all terms to the left:

7x-78-(15x+162)=0

We get rid of parentheses

7x-15x-162-78=0

We add all the numbers together, and all the variables

-8x-240=0

We move all terms containing x to the left, all other terms to the right

-8x=240

x=240/-8

x=-30

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