1-7y=-20

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Solution for 1-7y=-20 equation: 


Simplifying
1 + -7y = -20

Solving
1 + -7y = -20

Solving for variable 'y'.

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

Add '-1' to each side of the equation.
1 + -1 + -7y = -20 + -1

Combine like terms: 1 + -1 = 0
0 + -7y = -20 + -1
-7y = -20 + -1

Combine like terms: -20 + -1 = -21
-7y = -21

Divide each side by '-7'.
y = 3

Simplifying
y = 3

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