-3(0.4+0.2y)+6y=-12

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Solution for -3(0.4+0.2y)+6y=-12 equation: 


Simplifying
-3(0.4 + 0.2y) + 6y = -12
(0.4 * -3 + 0.2y * -3) + 6y = -12
(-1.2 + -0.6y) + 6y = -12

Combine like terms: -0.6y + 6y = 5.4y
-1.2 + 5.4y = -12

Solving
-1.2 + 5.4y = -12

Solving for variable 'y'.

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

Add '1.2' to each side of the equation.
-1.2 + 1.2 + 5.4y = -12 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + 5.4y = -12 + 1.2
5.4y = -12 + 1.2

Combine like terms: -12 + 1.2 = -10.8
5.4y = -10.8

Divide each side by '5.4'.
y = -2

Simplifying
y = -2

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