Question

The sum of two numbers is fifteen. One number is three less than the other. Determine the system of equations.

Answer 1

Answer:

let, one number be x

then, other number be x-3

X+X-3=15

or, 2X=15+3

or,2X=18

or,X=18÷2

or,X=9

one number =9

then another number=X-3=9-3=6