Question

solve by elimination method (1). x-3y=7 and x-y=5 (2).8x+5y=9 and 3x+2y=4 (3).3x-y=3 and 4x-y=8​

Answer 1

Answer:

please check the attachment

Answer 2

Answer:

1) x - 3y = 7

x - y = 5

- + -

—————

-2y = 2

y = -1

2) 2(8x + 5y = 9)

5(3x + 2y = 4)

16x + 10y = 18

15x + 10y = 20

- - -

———————

x = - 2

3) 3x - y = 3

4x - y = 8

- + -

——————

-1x = -5

x = 5

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