Multi-step Equations (variable one side)

Solve.

8v - 4(v + 8) = 8

• 2

• 10

• 4

• -4

Solve.

2x - 3 + 4x = 27

• 12

• 4

• 5

• 15

Find the error in the problem below
19 - 2k = 3k - 1
     +3k   +3k
19 + 1k = -1
-19           -19
k = -20

• They should have divided by 1 for the last step
• They should add 19 instead of subtracting 19
• I can not find an error
• Instead of adding 3k they should subtract 3k

Tags

CCSS.HSA.REI.A.1

Find the Error
What error did the student make when solving the equation:
5x + 6 =  66
5x - 6 = 66 -6
5x = 60
5*5x= 60*5
x = 300

• The student subtracted 6 from both sides instead of adding
• Student multiplied by 5 instead of dividing by 5
• Student got the wrong answer when subtracting 66-6
• The student did not correctly eliminate the variable from one side of the equation

Tags

CCSS.HSA.REI.A.1

Solve.
 $\frac{\left(2x-5\right)}{3}=9$  

• x = 4

• x = 7

• x = 12

• x = 16