get each variable by itself on one side of the equation.
x-45=90

n+23.4=36.9

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1. I'll show you how to work this kind of problem.

n+23.4=36.9

You want to get the knowns on one side and the unknown on the other side.

Subtract 23 from both sides.

n = 36.9 - 23.4
n = 13.5

Note: you'll need to add 45 to both sides.

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Ms. Sue
2. 13 ;-5

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3. mrow

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