21(7-y)+4=-4

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Solution for 21(7-y)+4=-4 equation:


Simplifying
21(7 + -1y) + 4 = -4
(7 * 21 + -1y * 21) + 4 = -4
(147 + -21y) + 4 = -4

Reorder the terms:
147 + 4 + -21y = -4

Combine like terms: 147 + 4 = 151
151 + -21y = -4

Solving
151 + -21y = -4

Solving for variable 'y'.

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

Add '-151' to each side of the equation.
151 + -151 + -21y = -4 + -151

Combine like terms: 151 + -151 = 0
0 + -21y = -4 + -151
-21y = -4 + -151

Combine like terms: -4 + -151 = -155
-21y = -155

Divide each side by '-21'.
y = 7.380952381

Simplifying
y = 7.380952381

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