(20-0.5y)+y=100

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Solution for (20-0.5y)+y=100 equation:


Simplifying
(20 + -0.5y) + y = 100

Remove parenthesis around (20 + -0.5y)
20 + -0.5y + y = 100

Combine like terms: -0.5y + y = 0.5y
20 + 0.5y = 100

Solving
20 + 0.5y = 100

Solving for variable 'y'.

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

Add '-20' to each side of the equation.
20 + -20 + 0.5y = 100 + -20

Combine like terms: 20 + -20 = 0
0 + 0.5y = 100 + -20
0.5y = 100 + -20

Combine like terms: 100 + -20 = 80
0.5y = 80

Divide each side by '0.5'.
y = 160

Simplifying
y = 160

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