Grade8Unit4L4

Lin solved the equation 8 (x - 3) +7 = 2x (4 -17) incorrectly.

Explain her error(s) and find the actual solution.

SELECT ALL THAT APPLY

• Lin made a mistake combining 4 and -17.

• Lin made a mistake distributing 8 to x and -3.

• Lin made a mistake when adding 8x to both sides.

• The actual solution is x = ¹/₂

• The actual solution is x = -¹⁷/₂

Leo solved the equation 5(a-7) = 1+3a-10 correctly.

Which could be his first step? SELECT TWO

• 5a -7 = 1+3a -10

• 5a -35 = 1+3a -10

• 5(a -7) = 3a -9

• 5(a -7) = 3a +11

• 5(a -7) = 4a -10

Solve this equation for x. Input answer in space provided.

2(4x -5) = 5x+2