Question

Using suitable rearrangement find the sum of -5 + 7/10 + 3/7 + (-3) + 15/4

Answer 1

-4.88

Explanation:

-5+(-3) = (-8)

7/10 = 98/140

3/7 = 60/140

15/4 = 525/140

525/140 + 60/140 + 98/140 = 683/140

683/140 = 4 123/140

4 123/140 = 4.88 (2dp)

4.88+(-8) = -4.88