265,509 views
15 votes
15 votes
Twice the difference between a number and 4 is twenty. Find the number.

А. 8
B. 9
C. 12
D. 14

Please help!!!

User Alessandro Solbiati
by
3.3k points

2 Answers

12 votes
12 votes

Answer:

The number is 14

Explanation:

Let's call this unknown number of x:

2×(x – 4) = 20

2x – 8 = 20

2x = 20 + 8

2x = 28

x = 28/2

x = 14

User HarriLehtisaari
by
3.3k points
9 votes
9 votes

Answer:

D 14

Explanation:

Let x be the number

2(x-4) = 20

Divide each side by 2

2/2(x-4) = 20/2

x-4 = 10

Add 4 to each side

x-4+4 = 10+4

x = 14

User Jenette
by
3.0k points
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