Math, asked by vishnumumbai, 5 months ago

8x + 5y = 420 and 5x + 8y = 321 ; what is the value of x - y ?

Answers

Answered by surekha669

0

Answer:

i hope this will help you

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Answered by arijitduttachowdhury

2

Step-by-step explanation:

8x+5y = 420

5x+8y = 321

By condition,

(8x+5y)-(5x+8y) = 420-321

8x-5x+5y-8y = 99

8(x-y)-5(x-y) = 99

(x-y)(8-5) = 99

(x-y)×3 = 99

(x-y) = 99/3

(x-y) = 33

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