Answer:
7/10
Explanation:
9/10 - _ = 1/5
Let's represent the unknown as x
Therefore,
9/10 - x = 1/5
9/10 - 1/5 = x
x = 9/10 - 1/5 = 7/10
x=7/10
1/5=2/10
9/10- =2/10
Substitute the blank with X
9/10- X =2/10
1.6m questions
2.0m answers