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Nadusha1986 [10]
3 years ago
6

9x+y=28 3x+3y=(-12) Solve using elimination

Mathematics
1 answer:
Rzqust [24]3 years ago
5 0

Answer:

(x, y)=(4,-8)

Step-by-step explanation:

9x+y=28

3x+3y=-12 /:(-3)

9x+y=28.......(1)

-x-y=4......(2)

9x+y=28

(1)+(2): 8x=32

9x+y=28

x=32/8

9x+y=28

x=4

9*4+y=28

x=4

36+y=28

x=4

y=28-36

x=4

y=-8

x=4

(x, y) =(4,-8)

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