-2(4.2+-0.4y)+6y=-34

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Solution for -2(4.2+-0.4y)+6y=-34 equation: 


Simplifying
-2(4.2 + -0.4y) + 6y = -34
(4.2 * -2 + -0.4y * -2) + 6y = -34
(-8.4 + 0.8y) + 6y = -34

Combine like terms: 0.8y + 6y = 6.8y
-8.4 + 6.8y = -34

Solving
-8.4 + 6.8y = -34

Solving for variable 'y'.

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

Add '8.4' to each side of the equation.
-8.4 + 8.4 + 6.8y = -34 + 8.4

Combine like terms: -8.4 + 8.4 = 0.0
0.0 + 6.8y = -34 + 8.4
6.8y = -34 + 8.4

Combine like terms: -34 + 8.4 = -25.6
6.8y = -25.6

Divide each side by '6.8'.
y = -3.764705882

Simplifying
y = -3.764705882

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