3(-1)+2y=78

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Solution for 3(-1)+2y=78 equation: 


Simplifying
3(-1) + 2y = 78

Multiply 3 * -1
-3 + 2y = 78

Solving
-3 + 2y = 78

Solving for variable 'y'.

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

Add '3' to each side of the equation.
-3 + 3 + 2y = 78 + 3

Combine like terms: -3 + 3 = 0
0 + 2y = 78 + 3
2y = 78 + 3

Combine like terms: 78 + 3 = 81
2y = 81

Divide each side by '2'.
y = 40.5

Simplifying
y = 40.5

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