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EricBryanLopez
22.09.2019 •
Mathematics
If you start with a number, add 5, then multiply by 7, the result is 133. what was the original number
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Ответ:
a + 5 = b ;
b * 7 = 133 .
What is: "a" ?
133 / 7 = 19 = b ;
a + 5 = b = 19 ;
a + 5 = 19 ;
Subtract "5" from each side of the equation;
to isolate "a" on one side of the equation; and to solve for "a" ;
a + 5 − 5 = 19 − 5 ;
to get:
a = 14 .
Let us check our
Start with "14" ;
Add "5" : "14 + 5 = 19 " .
then multiply by "7" : "19 * 7"
and the result is: 133 ?
19 * 7 = ? 133 ? Yes!
Ответ:
its 6.3
Step-by-step explanation: