Question

4x-y=15,7x+2y=15 simultaneous equation​

Answer 1

Answer:

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Answer 2

Answer:

X=3,y=-3

Step-by-step explanation:

4x-y=15(*by2)

7x+2y=15

8x-2y=30

7x+2y=15

adding two we get

15x=45

X=45/15

X=3

7*3+2y=15

21+2y=15

2y=15-21

2y=-6

y=-6/2

y=-3