Question

Two times a number added to another number is 25. Three times the first number minus the second number is 20. What are both numbers?

Answer 1

the two number are 7 and 9

Explanation:

2*x+y=25

3x-y = 20

add the two equations

2*x+y=25

3x-y = 20

---------------

5x = 45

divide by 5

5x/5 = 45/5

x = 9

lets find y

2x+y = 25

substitute x

2*9 +y =25

18+y =25

subtract 18 from both side

y = 25-18

y =7