Question

Two times a number added to another number is 25. Three times the first number minus the other number is 20. Find the two numbers

Answer 1

x=9, y=7

Explanation:

2x+y=25

3x-y=20 let's sum these two equations respectively

2x+3x+y-y=25+20

5x=45

x=45/5=9

let's put the value of ex on its place in the first equation

2*9+y=25, 18+y=25, y=25-18=7