-3(-4.2)-y=-5

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Solution for -3(-4.2)-y=-5 equation: 


Simplifying
-3(-4.2) + -1y = -5

Multiply -3 * -4.2
12.6 + -1y = -5

Solving
12.6 + -1y = -5

Solving for variable 'y'.

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

Add '-12.6' to each side of the equation.
12.6 + -12.6 + -1y = -5 + -12.6

Combine like terms: 12.6 + -12.6 = 0.0
0.0 + -1y = -5 + -12.6
-1y = -5 + -12.6

Combine like terms: -5 + -12.6 = -17.6
-1y = -17.6

Divide each side by '-1'.
y = 17.6

Simplifying
y = 17.6

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