if 56x+65y=47;65x+56y=74 then find the value of (x-y)
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Answer:
x= 2 and y= -1
Step-by-step explanation:
adding 56x+65y=47 equation - 1
65x + 56y=74 equation - 2
we get 121x+121y=121
i.e x + y = 1 equation 3
subtracting we get - x + y= - 3 equation 4
solving 3 and 4
we get, x = 2 and y = -1
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