91-84=35y-42y

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Solution for 91-84=35y-42y equation:


Simplifying
91 + -84 = 35y + -42y

Combine like terms: 91 + -84 = 7
7 = 35y + -42y

Combine like terms: 35y + -42y = -7y
7 = -7y

Solving
7 = -7y

Solving for variable 'y'.

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

Add '7y' to each side of the equation.
7 + 7y = -7y + 7y

Combine like terms: -7y + 7y = 0
7 + 7y = 0

Add '-7' to each side of the equation.
7 + -7 + 7y = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 7y = 0 + -7
7y = 0 + -7

Combine like terms: 0 + -7 = -7
7y = -7

Divide each side by '7'.
y = -1

Simplifying
y = -1

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