(13-y)+2y=20

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Solution for (13-y)+2y=20 equation:


Simplifying
(13 + -1y) + 2y = 20

Remove parenthesis around (13 + -1y)
13 + -1y + 2y = 20

Combine like terms: -1y + 2y = 1y
13 + 1y = 20

Solving
13 + 1y = 20

Solving for variable 'y'.

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

Add '-13' to each side of the equation.
13 + -13 + 1y = 20 + -13

Combine like terms: 13 + -13 = 0
0 + 1y = 20 + -13
1y = 20 + -13

Combine like terms: 20 + -13 = 7
1y = 7

Divide each side by '1'.
y = 7

Simplifying
y = 7

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