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svp [43]
3 years ago
10

Kathi and Robert

Mathematics
1 answer:
Ad libitum [116K]3 years ago
4 0

10.5x + 3y = 811.5

x + y = 97

y = 97 - x

3y = 291 - 3x

7.5x + 291 = 811.5

7.5x = 811.5 - 291

x = 520.5 / 7.5

x = 69.4

69 were sold at the original price

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Luda [366]
To solve this problem you must follow the proccedure below:

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8 0
3 years ago
20 points if you help me solve, this is due tmr.<br><br> 21(2 – x) + 12x = 44
alekssr [168]

Answer:

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then you add 12 x with 42-21x

making it 42-9x=44

hence,

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x=  - 2/9

hope this helps.      :)

8 0
3 years ago
Read 2 more answers
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