3(-13)-y=20

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Solution for 3(-13)-y=20 equation: 


Simplifying
3(-13) + -1y = 20

Multiply 3 * -13
-39 + -1y = 20

Solving
-39 + -1y = 20

Solving for variable 'y'.

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

Add '39' to each side of the equation.
-39 + 39 + -1y = 20 + 39

Combine like terms: -39 + 39 = 0
0 + -1y = 20 + 39
-1y = 20 + 39

Combine like terms: 20 + 39 = 59
-1y = 59

Divide each side by '-1'.
y = -59

Simplifying
y = -59

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