Question

What is the value of x in the equation? 4 3/7 x − 3 1/2 = 12

A) 3 2/5
B) 3 1/2
C) 3 3/4
D) 3 6/7

Answer 1

The answer is B.) 3 1/2

Explanation:

4

3

7

x − 3

1

2

= 12

31

7

x −

7

2

= 12

31

7

x · 14 −

7

2

· 14 = 12 · 14

62x − 49 = 168

62x = 217

x =

217

62

=

7

2

= 3

1

2

Answer 2

B) 3 1/2 or 7/2

Explanation:

4 3/7=31/7

3 1/2=7/2

---------------

31/7x-7/2=12

31/7x=12+7/2

31/7x=24/2+7/2

31/7x=31/2

x=(31/2)/(31/7)

x=(31/2)(7/31)

x=7/2