Question

X : y = 5 : 3
and
x + y = 56
Work out the value of x - y

Answer 1

14

Explanation:

x / y = 5 / 3, then 3x = 5y , x = 5/3y

we can type 5/3y instead of x ;

5/3y + y = 8/3y = 56, then y = 21

.

now let's find x ;

x - 21 = 56, then x = 35

x - y = 35 - 21 = 14

Answer 2

Explanation:

pleases try to understand this the second photo is the first, thanks