-17y+8y+20y-9y-(-12)=(-4)

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Solution for -17y+8y+20y-9y-(-12)=(-4) equation:


Simplifying
-17y + 8y + 20y + -9y + -1(-12) = (-4)

Multiply -1 * -12
-17y + 8y + 20y + -9y + 12 = (-4)

Reorder the terms:
12 + -17y + 8y + 20y + -9y = (-4)

Combine like terms: -17y + 8y = -9y
12 + -9y + 20y + -9y = (-4)

Combine like terms: -9y + 20y = 11y
12 + 11y + -9y = (-4)

Combine like terms: 11y + -9y = 2y
12 + 2y = (-4)
12 + 2y = -4

Solving
12 + 2y = -4

Solving for variable 'y'.

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

Add '-12' to each side of the equation.
12 + -12 + 2y = -4 + -12

Combine like terms: 12 + -12 = 0
0 + 2y = -4 + -12
2y = -4 + -12

Combine like terms: -4 + -12 = -16
2y = -16

Divide each side by '2'.
y = -8

Simplifying
y = -8

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