Question

5/7of 4/15 of a number is 8more than 2/5of 4/7 of the same number what is half of that number

Answer 1

Answer:let that number be x

4/15*5/7x - 4/9*2/5x = 8

4/21x - 8/45x = 8

calculating l.c.m and making denominators equal

60/315x - 56/315x = 8

4/315x = 8

x = 630

half of x = 315

Step-by-step explanation:

Answer 2

Answer:

-105

Step-by-step explanation:

5/7 * 4/15 * x = (2/5 * 4/7)x + 8

4/21 * x = 8/35 * x + 8

4x/21 - 8x/35 = 8

-28x/735 = 8

x = 8*735/-28

x = -210