Question

x + y = 55,4x -3y =101​

Answer 1

$x + y = 55 \\ 4x - 3y = 101 \\ x = 55 - y \\ 4(55 - y) - 3y = 101 \\ 220 - 7y = 101 \\ 7y = 119 \\ y = 17 \\ \\ x = 55 - 17 = 38$

hope it helps

Answer 2

x + y = 55 .....i)

4x - 3y = 101 ......ii)

i) + 3*ii)

3x + 3y = 165

4x - 3y = 101

7x = 266

x = 38

substituting in i)

y = 17

x = 38 , y = 17

hope it helped you