3(-4)-y=19

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Solution for 3(-4)-y=19 equation: 


Simplifying
3(-4) + -1y = 19

Multiply 3 * -4
-12 + -1y = 19

Solving
-12 + -1y = 19

Solving for variable 'y'.

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

Add '12' to each side of the equation.
-12 + 12 + -1y = 19 + 12

Combine like terms: -12 + 12 = 0
0 + -1y = 19 + 12
-1y = 19 + 12

Combine like terms: 19 + 12 = 31
-1y = 31

Divide each side by '-1'.
y = -31

Simplifying
y = -31

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