(7y-7)-(-3y+2)=71

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Solution for (7y-7)-(-3y+2)=71 equation:


Simplifying
(7y + -7) + -1(-3y + 2) = 71

Reorder the terms:
(-7 + 7y) + -1(-3y + 2) = 71

Remove parenthesis around (-7 + 7y)
-7 + 7y + -1(-3y + 2) = 71

Reorder the terms:
-7 + 7y + -1(2 + -3y) = 71
-7 + 7y + (2 * -1 + -3y * -1) = 71
-7 + 7y + (-2 + 3y) = 71

Reorder the terms:
-7 + -2 + 7y + 3y = 71

Combine like terms: -7 + -2 = -9
-9 + 7y + 3y = 71

Combine like terms: 7y + 3y = 10y
-9 + 10y = 71

Solving
-9 + 10y = 71

Solving for variable 'y'.

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

Add '9' to each side of the equation.
-9 + 9 + 10y = 71 + 9

Combine like terms: -9 + 9 = 0
0 + 10y = 71 + 9
10y = 71 + 9

Combine like terms: 71 + 9 = 80
10y = 80

Divide each side by '10'.
y = 8

Simplifying
y = 8

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