71-(-4y)=21

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Solution for 71-(-4y)=21 equation:


Simplifying
71 + -1(-4y) = 21

Remove parenthesis around (-4y)
71 + -1 * -4y = 21

Multiply -1 * -4
71 + 4y = 21

Solving
71 + 4y = 21

Solving for variable 'y'.

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

Add '-71' to each side of the equation.
71 + -71 + 4y = 21 + -71

Combine like terms: 71 + -71 = 0
0 + 4y = 21 + -71
4y = 21 + -71

Combine like terms: 21 + -71 = -50
4y = -50

Divide each side by '4'.
y = -12.5

Simplifying
y = -12.5

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