-20y+18=21

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Solution for -20y+18=21 equation: 


Simplifying
-20y + 18 = 21

Reorder the terms:
18 + -20y = 21

Solving
18 + -20y = 21

Solving for variable 'y'.

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

Add '-18' to each side of the equation.
18 + -18 + -20y = 21 + -18

Combine like terms: 18 + -18 = 0
0 + -20y = 21 + -18
-20y = 21 + -18

Combine like terms: 21 + -18 = 3
-20y = 3

Divide each side by '-20'.
y = -0.15

Simplifying
y = -0.15

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