⬆️6 --- 7hrs⬇️
⬆️x --- 3hrs⬇️
___________
6 --- 3
x --- 7
3x =6•7
3x = 42
x = 42/3
x = 14 torneiras
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⬆️6 --- 7hrs⬇️
⬆️x --- 3hrs⬇️
___________
6 --- 3
x --- 7
3x =6•7
3x = 42
x = 42/3
x = 14 torneiras