-2(-21)+8y=-58

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Solution for -2(-21)+8y=-58 equation: 


Simplifying
-2(-21) + 8y = -58

Multiply -2 * -21
42 + 8y = -58

Solving
42 + 8y = -58

Solving for variable 'y'.

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

Add '-42' to each side of the equation.
42 + -42 + 8y = -58 + -42

Combine like terms: 42 + -42 = 0
0 + 8y = -58 + -42
8y = -58 + -42

Combine like terms: -58 + -42 = -100
8y = -100

Divide each side by '8'.
y = -12.5

Simplifying
y = -12.5

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