6y-15-7y=-20

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Solution for 6y-15-7y=-20 equation:


Simplifying
6y + -15 + -7y = -20

Reorder the terms:
-15 + 6y + -7y = -20

Combine like terms: 6y + -7y = -1y
-15 + -1y = -20

Solving
-15 + -1y = -20

Solving for variable 'y'.

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

Add '15' to each side of the equation.
-15 + 15 + -1y = -20 + 15

Combine like terms: -15 + 15 = 0
0 + -1y = -20 + 15
-1y = -20 + 15

Combine like terms: -20 + 15 = -5
-1y = -5

Divide each side by '-1'.
y = 5

Simplifying
y = 5

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