-4y-20=-7(y-1)

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Solution for -4y-20=-7(y-1) equation:


Simplifying
-4y + -20 = -7(y + -1)

Reorder the terms:
-20 + -4y = -7(y + -1)

Reorder the terms:
-20 + -4y = -7(-1 + y)
-20 + -4y = (-1 * -7 + y * -7)
-20 + -4y = (7 + -7y)

Solving
-20 + -4y = 7 + -7y

Solving for variable 'y'.

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

Add '7y' to each side of the equation.
-20 + -4y + 7y = 7 + -7y + 7y

Combine like terms: -4y + 7y = 3y
-20 + 3y = 7 + -7y + 7y

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

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

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

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

Divide each side by '3'.
y = 9

Simplifying
y = 9

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