Question

Which line is wrong for this problem:

8x - 3(2x+4)=10

line a. 8x - 6x - 12=10 line c. 2x - 12 + 12 = 10 - 12

line b. 2x - 12=10 line d. 2x = -2

line e. x = -1

Answer 1

Line 3

Explanation:

we have

4(2x+3)=-20

Verify each line

Line 1

4(2x+3)=-20 ----> the given equation

Line 1 is correct

Line 2

Distribute in the left side

8x+12=-20

Line 2 is correct

Line 3

Subtract 12 both sides

8x=-20-12

8x=-32

The line 3 is not correct