Rawknowledge24
14.07.2021 •
Mathematics
21 × 6 ÷ 7 + 12 - 15
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Ответ:
15
Step-by-step explanation:
By order of operations, multiplication and division are done first, then the addition and subtraction
21*6 = 126
126/7 = 18
18 + 12 = 30
30 - 15 = 15
Ответ:
36
Step-by-step explanation:
AB + BC = AC
4m - 15 + 5m - 6 = 15
m - 21 = 15
m = 36