Question

Sadiq has spend 1/5 on rent and saved 2/7 how much is earnings

Answer 1

let the earning is 100
spent=100×1/5=20
savings =100-20=80
means 80 is equal too 2/7
then 100 is equal to 2×100/7×80=200/560

Answer 2

Let the earning be x

$x - \frac{1}{5} = \frac{2}{7}$

$\frac{5x - 1}{5 } = \frac{2}{7}$

35x - 5 = 10

35x = 10 + 5

x = 15 / 35

x = 3/7