18y-9=20y-16

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Solution for 18y-9=20y-16 equation:


Simplifying
18y + -9 = 20y + -16

Reorder the terms:
-9 + 18y = 20y + -16

Reorder the terms:
-9 + 18y = -16 + 20y

Solving
-9 + 18y = -16 + 20y

Solving for variable 'y'.

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

Add '-20y' to each side of the equation.
-9 + 18y + -20y = -16 + 20y + -20y

Combine like terms: 18y + -20y = -2y
-9 + -2y = -16 + 20y + -20y

Combine like terms: 20y + -20y = 0
-9 + -2y = -16 + 0
-9 + -2y = -16

Add '9' to each side of the equation.
-9 + 9 + -2y = -16 + 9

Combine like terms: -9 + 9 = 0
0 + -2y = -16 + 9
-2y = -16 + 9

Combine like terms: -16 + 9 = -7
-2y = -7

Divide each side by '-2'.
y = 3.5

Simplifying
y = 3.5

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