-8y-1=-21-12y+6y

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Solution for -8y-1=-21-12y+6y equation:


Simplifying
-8y + -1 = -21 + -12y + 6y

Reorder the terms:
-1 + -8y = -21 + -12y + 6y

Combine like terms: -12y + 6y = -6y
-1 + -8y = -21 + -6y

Solving
-1 + -8y = -21 + -6y

Solving for variable 'y'.

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

Add '6y' to each side of the equation.
-1 + -8y + 6y = -21 + -6y + 6y

Combine like terms: -8y + 6y = -2y
-1 + -2y = -21 + -6y + 6y

Combine like terms: -6y + 6y = 0
-1 + -2y = -21 + 0
-1 + -2y = -21

Add '1' to each side of the equation.
-1 + 1 + -2y = -21 + 1

Combine like terms: -1 + 1 = 0
0 + -2y = -21 + 1
-2y = -21 + 1

Combine like terms: -21 + 1 = -20
-2y = -20

Divide each side by '-2'.
y = 10

Simplifying
y = 10

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