kaffolter25
16.10.2019 •
Mathematics
How do i rewrite 21+42÷7×3 with a set of parentheses to equal 3
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Ответ:
(21 + 42) / (7 x 3)
Step-by-step explanation:
Using PEMDAS work on the first parentheses. 21 plus 42 equals 63. 7 times 3 equals 21. Now you have 63 divided by 21, which equals 3.
(21 + 42) / (7 x 3)
63 / (7 x 3)
63 / 21
3
Ответ:
a*D=B*c
150=12x
x=150/12
x=12.5