Question

A rational number is such that when we multiply it by 5 divided 2 and add 2 divided 3 to the product we get -7 divided 12.What is the number?

Answer 1

Rational number  = a

(a  x 5/2)  + 2/3  = -7 / 12

5a/2  + 2/3    = -7 /12

LCM = 12

30a  + 8  = - 7

30a  = =15

a = -15/30  = - 1/2