25=18-y

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Solution for 25=18-y equation:


Simplifying
25 = 18 + -1y

Solving
25 = 18 + -1y

Solving for variable 'y'.

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

Add 'y' to each side of the equation.
25 + y = 18 + -1y + y

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

Add '-25' to each side of the equation.
25 + -25 + y = 18 + -25

Combine like terms: 25 + -25 = 0
0 + y = 18 + -25
y = 18 + -25

Combine like terms: 18 + -25 = -7
y = -7

Simplifying
y = -7

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