I also suggest using an app called photomath. It takes you through the steps of solving the equations and gives you the answer as well.
1/2 is the simpliest form,divide everything by 2
Answer:
50
Step-by-step explanation:
140- 40=100
100÷2=50
x=50
Common denominator = 40
36/40 + 20/40 = 56/40
Reduce and simplify=
7/5, which is 1 and 2/5
Hope that helps