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ICSE Class 9 Answered

23x+31y=77,31x+23y=85
Asked by harsh0103017 | 09 Jun, 2021, 00:46: AM
answered-by-expert 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 | 09 Jun, 2021, 18:15: PM

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