3 years ago

7r - 3s =262r - 6s =8

Mathematics

1 answer:

Lostsunrise [7]3 years ago

3 0

Answer:

r = 3 2/3

s = -0.444333

Step-by-step explanation:

Multiply the top equation by 2

14r - 6s = 52

2r - 6s = 8 Subtract the two equations

12r = 44 Divide by 12

r = 44/12

r = 3 8/12

r = 3 2/3

2r - 6s = 8

2*(2 2/3) - 6s = 8

2*2.6667 - 6s = 8

5.3334 - 6s = 8 Subtract 5.3334 from both sides.

- 6s = 2 2/3 Divide by - 6

s = - 0.4443333

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