Question

A student solved the equation: x+2(x+1)=17
Line 1: x+2x+1=17

Line 2: 3x+1=17

Line 3: 3x=16

Line 4: x=16/3

Identify the Property used to go from Line 2 to Line 3:

Answer 1

Which line has a mistake? [ ]

Answer 2

What should have been the correct answer for the equation?

Answer 3

The property used to go from Line 2 to Line 3 is combining like terms.

Answer 4

Line 2: 3x + 1 = 17 is the line that contains a mistake.

Answer 5

The correct answer for the equation x+2(x+1)=17 is x = 5.