4 times a number added to another number is 36. 3 times the first number minus the other number is 20. find the numbers

Question

four times a number added to another number is 36. Three times the first number minus the other number is 20. Find the numbers.

Answer 1

4x+y=36

3x-y=20

add the equations

7x=56

x=56/7

x=8

4*8+y=36

32+y=36

y=36-32

y=4

the numbers are 8 and 4