15(x+1)=7(x+9)-4x

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Solution for 15(x+1)=7(x+9)-4x equation: 



15(x+1)=7(x+9)-4x

We move all terms to the left:

15(x+1)-(7(x+9)-4x)=0

We multiply parentheses

15x-(7(x+9)-4x)+15=0



We calculate terms in parentheses: -(7(x+9)-4x), so:

7(x+9)-4x

We add all the numbers together, and all the variables

-4x+7(x+9)

We multiply parentheses

-4x+7x+63

We add all the numbers together, and all the variables

3x+63

Back to the equation:

-(3x+63)



We get rid of parentheses

15x-3x-63+15=0

We add all the numbers together, and all the variables

12x-48=0

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

12x=48

x=48/12

x=4

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