15x+20=40+10x

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Solution for 15x+20=40+10x equation: 



15x+20=40+10x

We move all terms to the left:

15x+20-(40+10x)=0

We add all the numbers together, and all the variables

15x-(10x+40)+20=0

We get rid of parentheses

15x-10x-40+20=0

We add all the numbers together, and all the variables

5x-20=0

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

5x=20

x=20/5

x=4

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