120-2(80-y)=(140-2y).91

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Solution for 120-2(80-y)=(140-2y).91 equation:


Simplifying
120 + -2(80 + -1y) = (140 + -2y) * 0.91
120 + (80 * -2 + -1y * -2) = (140 + -2y) * 0.91
120 + (-160 + 2y) = (140 + -2y) * 0.91

Combine like terms: 120 + -160 = -40
-40 + 2y = (140 + -2y) * 0.91

Reorder the terms for easier multiplication:
-40 + 2y = 0.91(140 + -2y)
-40 + 2y = (140 * 0.91 + -2y * 0.91)
-40 + 2y = (127.4 + -1.82y)

Solving
-40 + 2y = 127.4 + -1.82y

Solving for variable 'y'.

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

Add '1.82y' to each side of the equation.
-40 + 2y + 1.82y = 127.4 + -1.82y + 1.82y

Combine like terms: 2y + 1.82y = 3.82y
-40 + 3.82y = 127.4 + -1.82y + 1.82y

Combine like terms: -1.82y + 1.82y = 0.00
-40 + 3.82y = 127.4 + 0.00
-40 + 3.82y = 127.4

Add '40' to each side of the equation.
-40 + 40 + 3.82y = 127.4 + 40

Combine like terms: -40 + 40 = 0
0 + 3.82y = 127.4 + 40
3.82y = 127.4 + 40

Combine like terms: 127.4 + 40 = 167.4
3.82y = 167.4

Divide each side by '3.82'.
y = 43.82198953

Simplifying
y = 43.82198953

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