7y-1=-8y-20

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Solution for 7y-1=-8y-20 equation:


Simplifying
7y + -1 = -8y + -20

Reorder the terms:
-1 + 7y = -8y + -20

Reorder the terms:
-1 + 7y = -20 + -8y

Solving
-1 + 7y = -20 + -8y

Solving for variable 'y'.

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

Add '8y' to each side of the equation.
-1 + 7y + 8y = -20 + -8y + 8y

Combine like terms: 7y + 8y = 15y
-1 + 15y = -20 + -8y + 8y

Combine like terms: -8y + 8y = 0
-1 + 15y = -20 + 0
-1 + 15y = -20

Add '1' to each side of the equation.
-1 + 1 + 15y = -20 + 1

Combine like terms: -1 + 1 = 0
0 + 15y = -20 + 1
15y = -20 + 1

Combine like terms: -20 + 1 = -19
15y = -19

Divide each side by '15'.
y = -1.266666667

Simplifying
y = -1.266666667

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