The property used to go from Line 2 to Line 3 is subtraction property of equality.
There is no mistake in any line.
The correct answer for the equation should have been x = 5.
A student solved the equation: x+2(x+1)=17%0D%0A%0D%0A+%0D%0A2%0D%0A(%0D%0A%0D%0A+%0D%0A1%0D%0A)%0D%0A=%0D%0A17%0D%0ALine 1: x+2x+1=17%0D%0A%0D%0A+%0D%0A2%0D%0A%0D%0A+%0D%0A1%0D%0A=%0D%0A17%0D%0ALine 2: 3x+1=17%0D%0A3%0D%0A%0D%0A+%0D%0A1%0D%0A=%0D%0A17%0D%0ALine 3: 3x=16%0D%0A3%0D%0A%0D%0A=%0D%0A16%0D%0ALine 4: x=163%0D%0A%0D%0A=%0D%0A16%0D%0A3%0D%0A(3 points)%0D%0APut responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.%0D%0AIdentify the Property used to go from Line 2 to Line 3: Response area%0D%0A%0D%0AWhich line has a mistake? Response area %0D%0A%0D%0AWhat should have been the correct answer for the equation? Response area
1 answer