10y-1(4y+8)=-20

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Solution for 10y-1(4y+8)=-20 equation:


Simplifying
10y + -1(4y + 8) = -20

Reorder the terms:
10y + -1(8 + 4y) = -20
10y + (8 * -1 + 4y * -1) = -20
10y + (-8 + -4y) = -20

Reorder the terms:
-8 + 10y + -4y = -20

Combine like terms: 10y + -4y = 6y
-8 + 6y = -20

Solving
-8 + 6y = -20

Solving for variable 'y'.

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

Add '8' to each side of the equation.
-8 + 8 + 6y = -20 + 8

Combine like terms: -8 + 8 = 0
0 + 6y = -20 + 8
6y = -20 + 8

Combine like terms: -20 + 8 = -12
6y = -12

Divide each side by '6'.
y = -2

Simplifying
y = -2

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