Question

41x-42y=8, 42x+41y=62. Find x-y​

Answer 1

Step-by-step explanation:

first add equation 1 and 2 equation,

$41x - 42y = 8 \\ + \\ 42x + 41y = 62$

$= 83x - 1y = 70$

now,subtract equation second from first,

$41x - 42y = 8 \\- \\ 42x + y = 62$

$- x - 43y = - 54$

now,

multiply equation third by 43,

$3569x - 43y = 3010$

now,subtract equation 4th from 5th,

$3569x - 43y = 3010 \\ - \\ x - 43y = - 54$