20(.9y-1)-17y=-18

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Solution for 20(.9y-1)-17y=-18 equation:


Simplifying
20(0.9y + -1) + -17y = -18

Reorder the terms:
20(-1 + 0.9y) + -17y = -18
(-1 * 20 + 0.9y * 20) + -17y = -18
(-20 + 18y) + -17y = -18

Combine like terms: 18y + -17y = 1y
-20 + 1y = -18

Solving
-20 + 1y = -18

Solving for variable 'y'.

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

Add '20' to each side of the equation.
-20 + 20 + 1y = -18 + 20

Combine like terms: -20 + 20 = 0
0 + 1y = -18 + 20
1y = -18 + 20

Combine like terms: -18 + 20 = 2
1y = 2

Divide each side by '1'.
y = 2

Simplifying
y = 2

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