andrew6494
14.10.2020 •
Mathematics
Twice the sum of a number and 9 is 30.
Slove equation
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Ответ:
6 and 9 twice is 30
Step-by-step explanation:
6 plus 9 is 15 twice is 30
Ответ:
10.5
Step-by-step explanation:
30 - 9 = 21
21 ÷ 2 = 10.5
Ответ:
30.7
Step-by-step explanation: