3(x+1)=7x+15

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Solution for 3(x+1)=7x+15 equation: 



3(x+1)=7x+15

We move all terms to the left:

3(x+1)-(7x+15)=0

We multiply parentheses

3x-(7x+15)+3=0

We get rid of parentheses

3x-7x-15+3=0

We add all the numbers together, and all the variables

-4x-12=0

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

-4x=12

x=12/-4

x=-3

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