40+2x=30+4x

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Solution for 40+2x=30+4x equation: 



40+2x=30+4x

We move all terms to the left:

40+2x-(30+4x)=0

We add all the numbers together, and all the variables

2x-(4x+30)+40=0

We get rid of parentheses

2x-4x-30+40=0

We add all the numbers together, and all the variables

-2x+10=0

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

-2x=-10

x=-10/-2

x=+5

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