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belka [17]
2 years ago
6

Please help me, I will award brainliest!!

Mathematics
1 answer:
UNO [17]2 years ago
5 0
Let's say x = hours washing cars and 13-x = hours walking dogs.

so 10*(x) + 9*(13-x) = 122, which is 10x + 9(13-x) = 122. that would be your system.
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