If 6x - 4y = 8 8x = 5y + 13 Then what is the value of 6x -3y?

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09 Oct 2020 Find the value of

If
6x - 4y = 8
8x = 5y + 13
Then what is the value of 6x -3y?

OPtion

1) 18
2) 21
3) 12
4) 16
5) 15
6) 6
7) 8
8) 9
9) 10
10) None of these

Solution

6x - 4y = 8 ---- (i)
8x - 5y = 13 ---- (ii)

Subtracting (i) from (ii), we get: 2x - y = 5
Multiplying both sides by 3 we get 6x -3y = 15

Option 3)

Correct Option: 5 Best Solution (1)