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When 7 times a number is increased by 5 the result is 54 find the number . A : 2 B : 7 C : 5 D : 12

When 7 times a number is increased by 5 the result is 54 find the number . A : 2 B : 7 C : 5 D : 12
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When 7 times a number is increased by 5 the result is 54 find the number .

A : 2
B : 7
C : 5
D : 12

User MimiEAM
by
8.0k points

2 Answers

5 votes


7 * a + 5 = 54 \\ 7a + 5 - 5 = 54 - 5 \\ 7a = 49 \\ (7a)/(7) = (49)/(7) \\ a = 7

"a" represents the unknown value.

hope that helped!

User Birendra Singh
by
7.2k points
5 votes
Answer is B you take 7 times 7 and then add 5
User Roland Rabien
by
8.2k points
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