3(21+-1y)-2y=12

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Solution for 3(21+-1y)-2y=12 equation:


Simplifying
3(21 + -1y) + -2y = 12
(21 * 3 + -1y * 3) + -2y = 12
(63 + -3y) + -2y = 12

Combine like terms: -3y + -2y = -5y
63 + -5y = 12

Solving
63 + -5y = 12

Solving for variable 'y'.

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

Add '-63' to each side of the equation.
63 + -63 + -5y = 12 + -63

Combine like terms: 63 + -63 = 0
0 + -5y = 12 + -63
-5y = 12 + -63

Combine like terms: 12 + -63 = -51
-5y = -51

Divide each side by '-5'.
y = 10.2

Simplifying
y = 10.2

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