12-(-9)y=8-4y

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


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

Multiply -1 * -9
12 + 9y = 8 + -4y

Solving
12 + 9y = 8 + -4y

Solving for variable 'y'.

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

Add '4y' to each side of the equation.
12 + 9y + 4y = 8 + -4y + 4y

Combine like terms: 9y + 4y = 13y
12 + 13y = 8 + -4y + 4y

Combine like terms: -4y + 4y = 0
12 + 13y = 8 + 0
12 + 13y = 8

Add '-12' to each side of the equation.
12 + -12 + 13y = 8 + -12

Combine like terms: 12 + -12 = 0
0 + 13y = 8 + -12
13y = 8 + -12

Combine like terms: 8 + -12 = -4
13y = -4

Divide each side by '13'.
y = -0.3076923077

Simplifying
y = -0.3076923077

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