23x+31y=77,31x+23y=85

Asked by harsh0103017 | 9th Jun, 2021, 12:46: AM

Expert Answer:

23x+31y=77
31x+23y=85
 
add both equations
54x+54y=162
x + y = 3
 
subtract first from second
8x - 8y = 8
x - y = 1
 
now add x + y = 3 and x - y = 1
2x = 4
x = 2
and y = 1

Answered by Arun | 9th Jun, 2021, 06:15: PM