(18-y)+(25-y)-(12-y)=0

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Solution for (18-y)+(25-y)-(12-y)=0 equation:


Simplifying
(18 + -1y) + (25 + -1y) + -1(12 + -1y) = 0

Remove parenthesis around (18 + -1y)
18 + -1y + (25 + -1y) + -1(12 + -1y) = 0

Remove parenthesis around (25 + -1y)
18 + -1y + 25 + -1y + -1(12 + -1y) = 0
18 + -1y + 25 + -1y + (12 * -1 + -1y * -1) = 0
18 + -1y + 25 + -1y + (-12 + 1y) = 0

Reorder the terms:
18 + 25 + -12 + -1y + -1y + 1y = 0

Combine like terms: 18 + 25 = 43
43 + -12 + -1y + -1y + 1y = 0

Combine like terms: 43 + -12 = 31
31 + -1y + -1y + 1y = 0

Combine like terms: -1y + -1y = -2y
31 + -2y + 1y = 0

Combine like terms: -2y + 1y = -1y
31 + -1y = 0

Solving
31 + -1y = 0

Solving for variable 'y'.

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

Add '-31' to each side of the equation.
31 + -31 + -1y = 0 + -31

Combine like terms: 31 + -31 = 0
0 + -1y = 0 + -31
-1y = 0 + -31

Combine like terms: 0 + -31 = -31
-1y = -31

Divide each side by '-1'.
y = 31

Simplifying
y = 31

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