-7y+18=123

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Solution for -7y+18=123 equation: 


Simplifying
-7y + 18 = 123

Reorder the terms:
18 + -7y = 123

Solving
18 + -7y = 123

Solving for variable 'y'.

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

Add '-18' to each side of the equation.
18 + -18 + -7y = 123 + -18

Combine like terms: 18 + -18 = 0
0 + -7y = 123 + -18
-7y = 123 + -18

Combine like terms: 123 + -18 = 105
-7y = 105

Divide each side by '-7'.
y = -15

Simplifying
y = -15

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