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Alexandra [31]
3 years ago
11

NEED HELP FAST

Mathematics
1 answer:
erma4kov [3.2K]3 years ago
8 0

Answer: 0.72/20; 1.98/20; 17.3/20

0.036 * 10/10 = 0.36/10 * 2/2 = 0.72/20

0.099 * 10/10 = 0.99/10 * 2/2 = 1.98/20

0.865 * 10/10 = 8.65/10 * 2/2 = 17.3/20

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4x+(x-y/8)=17 and 2y+x-(5y+2/4)=2 by using elimination method
vladimir2022 [97]

Answer:

x=811/238, y=36/119. (811/238, 36/119).

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4x+(x-y/8)=17

2y+x-(5y+2/4)=2

-----------------------

4x+x-y/8=17

5x-y/8=17

40x-y=136

y=40x-136

------------------

2y+x-5y-2/4=2

2y-5y+x-1/2=2

-3y+x=2+1/2

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-120x+408+x=5/2

-119x=5/2-408

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119x=811/2

x=(811/2)/119

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y=40(811/238)-136

y=16220/119-136

y=36/119

x=811/238, y=36/119.

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3 years ago
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