7(-1)-3y=20

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Solution for 7(-1)-3y=20 equation: 


Simplifying
7(-1) + -3y = 20

Multiply 7 * -1
-7 + -3y = 20

Solving
-7 + -3y = 20

Solving for variable 'y'.

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

Add '7' to each side of the equation.
-7 + 7 + -3y = 20 + 7

Combine like terms: -7 + 7 = 0
0 + -3y = 20 + 7
-3y = 20 + 7

Combine like terms: 20 + 7 = 27
-3y = 27

Divide each side by '-3'.
y = -9

Simplifying
y = -9

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