8y-(-13)=21

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Solution for 8y-(-13)=21 equation: 


Simplifying
8y + -1(-13) = 21

Multiply -1 * -13
8y + 13 = 21

Reorder the terms:
13 + 8y = 21

Solving
13 + 8y = 21

Solving for variable 'y'.

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

Add '-13' to each side of the equation.
13 + -13 + 8y = 21 + -13

Combine like terms: 13 + -13 = 0
0 + 8y = 21 + -13
8y = 21 + -13

Combine like terms: 21 + -13 = 8
8y = 8

Divide each side by '8'.
y = 1

Simplifying
y = 1

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