Answer:
Step-by-step explanation:
Call the movie length m
3/4 m = 1 1/2 hours
3/4 m = 3/2 hours
This is easier to do by decimals
3/4 = 0.75
3/2 = 1.5
0.75 m = 1.5 Divide by 0.75
0.75/0.75 m = 1.5/0.75
m = 2
If it must be done using fractions then this is how it works.
3/4 m = 3/2
[tex]\frac{3*m}{4}=\frac{3}{2}\\m=\frac{\frac{3}{2} }{\frac{3}{4} }[/tex]
[tex]m= \frac{3}{2}*\frac{4}{3}\\\text{The threes cancel out. So does 2 into 4}[/tex]
You get 2 just as you did before.
