Question

Which line contains an error?

Line 1: 6x – 2 (x – 5) = 12
Line 2: 6x – 2x – 10 = 12
Line 3: 4x – 10 = 12
Line 4: 4x = 32
Line 5: x = 8

Answer 1

this is how to correctly do it:

6x – 2 (x – 5) = 12

6x-2x+10=12

4x-10=12

4x=22

x=5.5

so the error is in line 4