Question

67x+108y=-417;108x+67y=-458​

Answer 1

Answer:

Step-by-step explanation:

let

67x+108y=-417------------------------(1)

108x+67y=-458-----------------------(2)

(1) x 67

4489x + 7236y = -27939-------------(3)

(2) x 108

11664x + 7236y = -49,464-------------(4)

(3)-(4)

4489x + 7236y = -27939

-11664x - 7236y = +49,464

=> -7175x = 21,525

=> x = -3

put x = -3 in (1)

67(-3)+108y=-417

-201 +108y=-417

108y = -216

y = -2

so,

x = -3

y = -2

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