-5(3)-2y=-21

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Solution for -5(3)-2y=-21 equation: 


Simplifying
-5(3) + -2y = -21

Multiply -5 * 3
-15 + -2y = -21

Solving
-15 + -2y = -21

Solving for variable 'y'.

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

Add '15' to each side of the equation.
-15 + 15 + -2y = -21 + 15

Combine like terms: -15 + 15 = 0
0 + -2y = -21 + 15
-2y = -21 + 15

Combine like terms: -21 + 15 = -6
-2y = -6

Divide each side by '-2'.
y = 3

Simplifying
y = 3

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