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25-07-2018
Mathematics

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2r+2s=50
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2r2s50 Please look at the picture class=

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choixongdong choixongdong

25-07-2018

2r + 2s = 50

2r - s = 17

-----------subtract

3s = 33

s = 11

2r - s = 17

2r - 11 = 17

2r = 28

r = 14

so r = 14 and s = 11

answer is C. r = 14, s = 11

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