-3=7(y-1.2587)

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Solution for -3=7(y-1.2587) equation: 



-3=7(y-1.2587)

We move all terms to the left:

-3-(7(y-1.2587))=0



We calculate terms in parentheses: -(7(y-1.2587)), so:

7(y-1.2587)

We multiply parentheses

7y-8.8109

Back to the equation:

-(7y-8.8109)



We get rid of parentheses

-7y+8.8109-3=0

We add all the numbers together, and all the variables

-7y+5.8109=0

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

-7y=-5.8109

y=-5.8109/-7

y=3.208846429952/3.8654812524159

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