4x+90=42x-100

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Solution for 4x+90=42x-100 equation: 



4x+90=42x-100

We move all terms to the left:

4x+90-(42x-100)=0

We get rid of parentheses

4x-42x+100+90=0

We add all the numbers together, and all the variables

-38x+190=0

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

-38x=-190

x=-190/-38

x=+5

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