Respuesta :
Set up a system of equations
4m-8=b
m+b=67
Solve by substituting for what b equals
4m-8= 67-m
5m= 75
m=15
So she is 15 years old
4m-8=b
m+b=67
Solve by substituting for what b equals
4m-8= 67-m
5m= 75
m=15
So she is 15 years old