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aliina [53]
3 years ago
6

9. The sum of 10 and 7 times a number is 59. What is the number? (Use n as the variable.)

Mathematics
2 answers:
CaHeK987 [17]3 years ago
7 0

Answer:

<h2><em><u>7</u></em></h2>

Step-by-step explanation:

<em><u>Let</u></em><em><u>,</u></em>

The number be = n

<em><u>According</u></em><em><u> </u></em><em><u>to</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>question</u></em><em><u>, </u></em>

First 7 times of n = 7n

Sum of 10 and the number = 7n + 10

<em><u>Said</u></em><em><u> </u></em><em><u>that</u></em><em><u>,</u></em>

The sum of 10 and 7 times of the number is 59.

<em><u>Therefore</u></em><em><u>, </u></em>

<em>By</em><em> </em><em>the</em><em> </em><em>problem</em><em> </em><em>,</em>

=> 7n + 10 = 59

=> 7n = 59 - 10

=> 7n = 49

=  > n =  \frac{49}{7}

=> n = 7

<em><u>Hence</u></em><em><u>,</u></em>

<em><u>The</u></em><em><u> </u></em><em><u>required</u></em><em><u> </u></em><em><u>number</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><em><u>7</u></em><em><u> </u></em><em><u>(</u></em><em><u>Ans</u></em><em><u>)</u></em>

PSYCHO15rus [73]3 years ago
4 0
10+7n=59
7n=59-10
7n=49
n=49/7
n=7
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