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mafiozo [28]
3 years ago
6

A number is three times the difference between twenty and the number. What is the number?

Chemistry
2 answers:
Svetllana [295]3 years ago
8 0

Answer:

the number is 7

Explanation:

"Three times" means multiply by 3

"Difference" means subtract

"Sum" means add

3(x - 7) = 23 - (3x + 2)

3x - 21 = 23 - 3x - 2

3x - 21 = 21 - 3x

6x = 42

x = 7

Andre45 [30]3 years ago
4 0
15, as 3 times 5 is 15 and 20-5 is 15
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