-8(2-4y)=21

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Solution for -8(2-4y)=21 equation: 


Simplifying
-8(2 + -4y) = 21
(2 * -8 + -4y * -8) = 21
(-16 + 32y) = 21

Solving
-16 + 32y = 21

Solving for variable 'y'.

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

Add '16' to each side of the equation.
-16 + 16 + 32y = 21 + 16

Combine like terms: -16 + 16 = 0
0 + 32y = 21 + 16
32y = 21 + 16

Combine like terms: 21 + 16 = 37
32y = 37

Divide each side by '32'.
y = 1.15625

Simplifying
y = 1.15625

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