-(5y-8)-(5y+9)=-20

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Solution for -(5y-8)-(5y+9)=-20 equation:


Simplifying
-1(5y + -8) + -1(5y + 9) = -20

Reorder the terms:
-1(-8 + 5y) + -1(5y + 9) = -20
(-8 * -1 + 5y * -1) + -1(5y + 9) = -20
(8 + -5y) + -1(5y + 9) = -20

Reorder the terms:
8 + -5y + -1(9 + 5y) = -20
8 + -5y + (9 * -1 + 5y * -1) = -20
8 + -5y + (-9 + -5y) = -20

Reorder the terms:
8 + -9 + -5y + -5y = -20

Combine like terms: 8 + -9 = -1
-1 + -5y + -5y = -20

Combine like terms: -5y + -5y = -10y
-1 + -10y = -20

Solving
-1 + -10y = -20

Solving for variable 'y'.

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

Add '1' to each side of the equation.
-1 + 1 + -10y = -20 + 1

Combine like terms: -1 + 1 = 0
0 + -10y = -20 + 1
-10y = -20 + 1

Combine like terms: -20 + 1 = -19
-10y = -19

Divide each side by '-10'.
y = 1.9

Simplifying
y = 1.9

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