20=2y-7y

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Solution for 20=2y-7y equation:


Simplifying
20 = 2y + -7y

Combine like terms: 2y + -7y = -5y
20 = -5y

Solving
20 = -5y

Solving for variable 'y'.

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

Add '5y' to each side of the equation.
20 + 5y = -5y + 5y

Combine like terms: -5y + 5y = 0
20 + 5y = 0

Add '-20' to each side of the equation.
20 + -20 + 5y = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 5y = 0 + -20
5y = 0 + -20

Combine like terms: 0 + -20 = -20
5y = -20

Divide each side by '5'.
y = -4

Simplifying
y = -4

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