.66(y-18)+.66(y+6)=-12

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Solution for .66(y-18)+.66(y+6)=-12 equation: 


Simplifying
0.66(y + -18) + 0.66(y + 6) = -12

Reorder the terms:
0.66(-18 + y) + 0.66(y + 6) = -12
(-18 * 0.66 + y * 0.66) + 0.66(y + 6) = -12
(-11.88 + 0.66y) + 0.66(y + 6) = -12

Reorder the terms:
-11.88 + 0.66y + 0.66(6 + y) = -12
-11.88 + 0.66y + (6 * 0.66 + y * 0.66) = -12
-11.88 + 0.66y + (3.96 + 0.66y) = -12

Reorder the terms:
-11.88 + 3.96 + 0.66y + 0.66y = -12

Combine like terms: -11.88 + 3.96 = -7.92
-7.92 + 0.66y + 0.66y = -12

Combine like terms: 0.66y + 0.66y = 1.32y
-7.92 + 1.32y = -12

Solving
-7.92 + 1.32y = -12

Solving for variable 'y'.

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

Add '7.92' to each side of the equation.
-7.92 + 7.92 + 1.32y = -12 + 7.92

Combine like terms: -7.92 + 7.92 = 0.00
0.00 + 1.32y = -12 + 7.92
1.32y = -12 + 7.92

Combine like terms: -12 + 7.92 = -4.08
1.32y = -4.08

Divide each side by '1.32'.
y = -3.090909091

Simplifying
y = -3.090909091

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