Answer:
x = 3/10
Step-by-step explanation:
−1/2 − (−4/5) = x
First, switch sides.
x = −1/2 − (−4/5)
You are subtracting a negative number. Subtracting a negative number means add a positive number.
x = -1/2 + 4/5
Now you are adding two fractions, so you need a common denominator. The LCD of 2 and 5 is 10.
x = -5/10 + 8/10
x = 3/10
2: 17.5 years. Work; 12 months in one year, 210 months divided by 12 months= 17.5 years.
The numbers are 32 and 21
32 + 21 = 53
32 - 21 = 11
