7y-18=20-y

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Solution for 7y-18=20-y equation:


Simplifying
7y + -18 = 20 + -1y

Reorder the terms:
-18 + 7y = 20 + -1y

Solving
-18 + 7y = 20 + -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.
-18 + 7y + y = 20 + -1y + y

Combine like terms: 7y + y = 8y
-18 + 8y = 20 + -1y + y

Combine like terms: -1y + y = 0
-18 + 8y = 20 + 0
-18 + 8y = 20

Add '18' to each side of the equation.
-18 + 18 + 8y = 20 + 18

Combine like terms: -18 + 18 = 0
0 + 8y = 20 + 18
8y = 20 + 18

Combine like terms: 20 + 18 = 38
8y = 38

Divide each side by '8'.
y = 4.75

Simplifying
y = 4.75

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