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35 votes
35 votes
Two times the sum of four times a number plus six is the same as five less than twice the same number what is the number?​

User Simonbs
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1 Answer

11 votes
11 votes

Answer:


(-17)/(6)

Explanation:

Let x be the number we want to find.

First we analyze the given informations

Info 1 : Two times the sum of four times a number plus six

We translate this statement (info 1) mathematically as : 2×(4x + 6)

Info 2 : five less than twice the same number

We translate this statement (info 2) mathematically as : 2x - 5

Info 1 is the same as Info 2 ⇔ 2×(4x + 6) = 2x - 5

2×(4x + 6) = 2x - 5

⇔ 8x + 12 = 2x - 5

⇔ 8x - 2x = -5 - 12

⇔ 6x = - 17

⇔ x = -17/6

User Abdullah Al Shakib
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