20y-17=18y-9

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Solution for 20y-17=18y-9 equation:


Simplifying
20y + -17 = 18y + -9

Reorder the terms:
-17 + 20y = 18y + -9

Reorder the terms:
-17 + 20y = -9 + 18y

Solving
-17 + 20y = -9 + 18y

Solving for variable 'y'.

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

Add '-18y' to each side of the equation.
-17 + 20y + -18y = -9 + 18y + -18y

Combine like terms: 20y + -18y = 2y
-17 + 2y = -9 + 18y + -18y

Combine like terms: 18y + -18y = 0
-17 + 2y = -9 + 0
-17 + 2y = -9

Add '17' to each side of the equation.
-17 + 17 + 2y = -9 + 17

Combine like terms: -17 + 17 = 0
0 + 2y = -9 + 17
2y = -9 + 17

Combine like terms: -9 + 17 = 8
2y = 8

Divide each side by '2'.
y = 4

Simplifying
y = 4

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