# Last thread for the Day!

• June 17th 2009, 04:47 PM
LOL
Identify and explain the errors and make the necessary corrections in each of the following answers done by a student

6x+12=10x-4
16x=-16
x=-1

4(2x-1)=7x+4
8x-1=7x+4
8x-7x=4+1
x=5
• June 17th 2009, 05:00 PM
VonNemo19
Quote:

Originally Posted by LOL
Identify and explain the errors and make the necessary corrections in each of the following answers done by a student

6x+12=10x-4
16x=-16
x=-1

4(2x-1)=7x+4
8x-1=7x+4
8x-7x=4+1
x=5

a) $6x-10x=-4-12$
$-4x=-16$

b)The left hand side of the second line should be $8x-4$
• June 17th 2009, 08:56 PM
yeongil
Quote:

Originally Posted by VonNemo19
a) $6x-10x=-4-12$
$-16x=-16$

Oops! (Doh)

6x+12=10x-4
-4x = -16
x = 4

01
• June 17th 2009, 08:58 PM
VonNemo19
Quote:

Originally Posted by yeongil
Oops! (Doh)

6x+12=10x-4
-4x = -16
x = 4

01

Unbelievable...................................... ......................