Titan Time Book #1

Find the Error
What error did the student make when solving the equation:
1/5x + 6 = 3/5x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2

• The student found an incorrect common denominator
• The student did not multiply all terms by the common denominator
• The student did not use opposite operations appropriately
• The student did not correctly eliminate the variable from one side of the equation

Solve:
7x + 19 = -2x + 55

• 4
• 14.8
• 8.2
• -4

Solve:
2(2x + 3) = -6(x + 9)

• 1.2
• 6
• -6
• 7.5

Solve:
32 - 7x = -6(x + 3)

• 50
• 3
• -3
• -50

Solve the equation
-8x - 8 +3(x - 2) = -3x + 2

• x = -8
• x = 8
• x = 2
• x = -2