2*20-1y=18

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Solution for 2*20-1y=18 equation: 


Simplifying
2 * 20 + -1y = 18

Multiply 2 * 20
40 + -1y = 18

Solving
40 + -1y = 18

Solving for variable 'y'.

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

Add '-40' to each side of the equation.
40 + -40 + -1y = 18 + -40

Combine like terms: 40 + -40 = 0
0 + -1y = 18 + -40
-1y = 18 + -40

Combine like terms: 18 + -40 = -22
-1y = -22

Divide each side by '-1'.
y = 22

Simplifying
y = 22

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