Question

plz help me it is a difficult questions

Answer 1

1.

Number = a

(1/5 x a) - 5 = 13

a/5 - 5 = 13

a - 25 = 13 x5

a = 65 + 25 = 90

Number is 90

2.

Number = a

(2/3  x a ) + 6 = 36

2a/3 + 6 = 36

2a + 18 = 216

2a = 216 - 18 = 198

a = 198/2 = 99

Number is 99

3.

Number = a

(1/3 x a)/17  = 2

a/51 = 2

a = 51 x 2 = 102

Number is 102