3y+12-y+4=78

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Solution for 3y+12-y+4=78 equation:


Simplifying
3y + 12 + -1y + 4 = 78

Reorder the terms:
12 + 4 + 3y + -1y = 78

Combine like terms: 12 + 4 = 16
16 + 3y + -1y = 78

Combine like terms: 3y + -1y = 2y
16 + 2y = 78

Solving
16 + 2y = 78

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 + 2y = 78 + -16

Combine like terms: 16 + -16 = 0
0 + 2y = 78 + -16
2y = 78 + -16

Combine like terms: 78 + -16 = 62
2y = 62

Divide each side by '2'.
y = 31

Simplifying
y = 31

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