42x+100=40x

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Solution for 42x+100=40x equation: 



42x+100=40x

We move all terms to the left:

42x+100-(40x)=0

We add all the numbers together, and all the variables

2x+100=0

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

2x=-100

x=-100/2

x=-50

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