-18=9y-5y

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Solution for -18=9y-5y equation:


Simplifying
-18 = 9y + -5y

Combine like terms: 9y + -5y = 4y
-18 = 4y

Solving
-18 = 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
-18 + -4y = 4y + -4y

Combine like terms: 4y + -4y = 0
-18 + -4y = 0

Add '18' to each side of the equation.
-18 + 18 + -4y = 0 + 18

Combine like terms: -18 + 18 = 0
0 + -4y = 0 + 18
-4y = 0 + 18

Combine like terms: 0 + 18 = 18
-4y = 18

Divide each side by '-4'.
y = -4.5

Simplifying
y = -4.5

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