-45y=1800
Divide each term in -45y=1800 by -45.
-45y-45=1800-45
Cancel the common factor.
-45y-45=1800-45
Divide y by 1.
y=1800-45
y=1800-45
Divide 1800 by -45.
y=-40
Solve for y -45y=1800
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