42-7x-13=20

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Solution for 42-7x-13=20 equation: 



42-7x-13=20

We move all terms to the left:

42-7x-13-(20)=0

We add all the numbers together, and all the variables

-7x+9=0

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

-7x=-9

x=-9/-7

x=1+2/7

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