Math, asked by jyakumari58, 2 months ago

If 3x+5y=10 and 2x+3y = 7 then 2x+y is equal to---

Answers

Answered by OoINTROVERToO

1

Step-by-step explanation:

[3x + 5y = 10] ×2 [2x + 3y = 7] ×3

6x + 10y = 20 6x + 9y = 21

SUBTRACT above, we get

6x + 9y - 6x - 10y = 21 - 20

-y = 1

y = -1

6x - 10 = 20

6x = 30

x = 5

2x + y

2*5 + (-1)

10 - 1

9

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