4y-(y-7)=-20

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


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

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

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

Combine like terms: 4y + -1y = 3y
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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