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ICSE Class 10 Answered

how to find x and y
Asked by sujatanallana123456 | 20 Jun, 2020, 04:35: PM
Expert Answer
73x + 27y = 19     ....(1)
27x + 73y = -119  ....(2)
 
Adding (1) and (2), we get
 
100x + 100y = -100
→ x + y = -1    ... (3)
 
Subtracting (1) from (2), we get
 
-46x + 46y = -138
→ x - y = 3      ... (4)
 
Adding (3) and (4), we get
 
2x = 2 → x = 1
From (1)
y = -1 - 1 = -2

 

Answered by Yasmeen Khan | 20 Jun, 2020, 08:21: PM
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