angelicf394
04.11.2019 •
Mathematics
7is subtracted from seven times a number.
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Ответ:
35
Step-by-step explanation:
If 7 is subtracted from seven times a certain number, the result is the same as if 17 is added to three times the number.
Ответ:
I find it convenient to rearrange the numbers so that positive numbers are added, negative numbers are added, then the two sums are added. Of course, you can do it any way you like. Your calculator does not care about the order of the numbers you enter.
... = (1.4 +1.8) -(5.5 +1.73 +1.09)
... = 3.2 - 8.32
... = -5.12