-2y-1=8(y+2)-7

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Solution for -2y-1=8(y+2)-7 equation:


Simplifying
-2y + -1 = 8(y + 2) + -7

Reorder the terms:
-1 + -2y = 8(y + 2) + -7

Reorder the terms:
-1 + -2y = 8(2 + y) + -7
-1 + -2y = (2 * 8 + y * 8) + -7
-1 + -2y = (16 + 8y) + -7

Reorder the terms:
-1 + -2y = 16 + -7 + 8y

Combine like terms: 16 + -7 = 9
-1 + -2y = 9 + 8y

Solving
-1 + -2y = 9 + 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 + -2y + -8y = 9 + 8y + -8y

Combine like terms: -2y + -8y = -10y
-1 + -10y = 9 + 8y + -8y

Combine like terms: 8y + -8y = 0
-1 + -10y = 9 + 0
-1 + -10y = 9

Add '1' to each side of the equation.
-1 + 1 + -10y = 9 + 1

Combine like terms: -1 + 1 = 0
0 + -10y = 9 + 1
-10y = 9 + 1

Combine like terms: 9 + 1 = 10
-10y = 10

Divide each side by '-10'.
y = -1

Simplifying
y = -1

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