Question

Using appropriate properties of addition find:
3/7+4/9+-5/21+2/3
Step by step​

Answer 1

Answer:

82/63 or 1 19/63

Step-by-step explanation:

Firstly, we need to make sure the number on the bottom of the fraction is the same, so first we should add the numbers that times into each other.

2/3 = 6/9

6/9 + 4/9 = 10/9

3/7 = 9/21

9/21 - 5/21 = 4/21

We need to find another common denominator here, which is 63.

10/9 = 70/63

4/21 = 12/63

70+12 = 82/63