get each variable by itself on one side of the equation.

x-45=90

n+23.4=36.9

3 answers

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

I'll be glad to check your work on the first problem.

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

13 ;-5

mrow