12x+30=10x+40

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Solution for 12x+30=10x+40 equation: 



12x+30=10x+40

We move all terms to the left:

12x+30-(10x+40)=0

We get rid of parentheses

12x-10x-40+30=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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