Question

the difference of two numbers is -1. If twice the number first number is added to three times the second number, the result is 13. What are the numbers​

Answer 1

first number= 2

second number =3

Explanation:

first number = a

second number = b

we have

a-b=-1 equation 1

2a+3b=13 equation 2

using equation 1 we have

a=-1+b

using equation 2

2(-1+b)+3b=13

-2+2b+3b=13

5b=13+2

b=15/5=3= second number

a=-1+3=2= first number