Inactive Tutor answered 08/04/18
Tutor
New to Wyzant
Esmeralda, this is a simultaneous equation question. I've written two solutions for you on two posted problems. Use the same process:
1) define variables
2) write two equations
3) using the simpler equation, express one variable in terms of the other.
4) substitute into more complex equation
5) solve for one variable
6) using the value for the solved variable, solve for second variable using simpler equation.