Question

Solve for x and y using ellimination method



3x -5y =4
9x – 2y =7

Answer 1

Answer:

$3x - 5y = 4...........eq(1) \\ 9x - 2y = 7...........eq(2) \\ then...eq(1) \: \times \: 3 \\ so... \\ 9x - 15y = 12..........eq(3) \\ solve \: eq(2) \: \: and \: \: \: eq(3) \\ 13y = - 5 \\ y = \frac{ - 5}{13}$

hope my answer will help you...

Answer 2

Step-by-step explanation:

by elimination method

3x-5y=4 ....(I)

9x-2y=7 .....(II)

now multiply eq (I) by 2 and eq (ii) by 5 and subtract it,

6x-10y=8

45x-10y=35

now subtract it,we get

39x=27

x=27/36 => x=9/13

now put this value in eq, we get

y= -5/13