7(y-5)+5(y+4)=57

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Solution for 7(y-5)+5(y+4)=57 equation:


Simplifying
7(y + -5) + 5(y + 4) = 57

Reorder the terms:
7(-5 + y) + 5(y + 4) = 57
(-5 * 7 + y * 7) + 5(y + 4) = 57
(-35 + 7y) + 5(y + 4) = 57

Reorder the terms:
-35 + 7y + 5(4 + y) = 57
-35 + 7y + (4 * 5 + y * 5) = 57
-35 + 7y + (20 + 5y) = 57

Reorder the terms:
-35 + 20 + 7y + 5y = 57

Combine like terms: -35 + 20 = -15
-15 + 7y + 5y = 57

Combine like terms: 7y + 5y = 12y
-15 + 12y = 57

Solving
-15 + 12y = 57

Solving for variable 'y'.

Move all terms containing y to the left, all other terms to the right.

Add '15' to each side of the equation.
-15 + 15 + 12y = 57 + 15

Combine like terms: -15 + 15 = 0
0 + 12y = 57 + 15
12y = 57 + 15

Combine like terms: 57 + 15 = 72
12y = 72

Divide each side by '12'.
y = 6

Simplifying
y = 6

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