40-2x=100-42x

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Solution for 40-2x=100-42x equation: 



40-2x=100-42x

We move all terms to the left:

40-2x-(100-42x)=0

We add all the numbers together, and all the variables

-2x-(-42x+100)+40=0

We get rid of parentheses

-2x+42x-100+40=0

We add all the numbers together, and all the variables

40x-60=0

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

40x=60

x=60/40

x=1+1/2

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