640-8y=500

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Solution for 640-8y=500 equation: 


Simplifying
640 + -8y = 500

Solving
640 + -8y = 500

Solving for variable 'y'.

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

Add '-640' to each side of the equation.
640 + -640 + -8y = 500 + -640

Combine like terms: 640 + -640 = 0
0 + -8y = 500 + -640
-8y = 500 + -640

Combine like terms: 500 + -640 = -140
-8y = -140

Divide each side by '-8'.
y = 17.5

Simplifying
y = 17.5

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