-3(5s-5)-15=-3(7s+3)-4

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Solution for -3(5s-5)-15=-3(7s+3)-4 equation: 



-3(5s-5)-15=-3(7s+3)-4

We move all terms to the left:

-3(5s-5)-15-(-3(7s+3)-4)=0

We multiply parentheses

-15s-(-3(7s+3)-4)+15-15=0



We calculate terms in parentheses: -(-3(7s+3)-4), so:

-3(7s+3)-4

We multiply parentheses

-21s-9-4

We add all the numbers together, and all the variables

-21s-13

Back to the equation:

-(-21s-13)



We add all the numbers together, and all the variables

-15s-(-21s-13)=0

We get rid of parentheses

-15s+21s+13=0

We add all the numbers together, and all the variables

6s+13=0

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

6s=-13

s=-13/6

s=-2+1/6

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