Multi-Step Equations

Front

8v - 4(v + 8) = 8

Back

10

Tags

CCSS.8.EE.C.7B

Front

-8(-8x - 6) = -6x - 22

Back

-1

Tags

CCSS.8.EE.C.7B

Front

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

Back

Instead of adding 3k they should subtract 3k

Front

Find the error in solving the equation: 1/5x + 6 = 3/5x + 5. Steps: 1x + 6 = 3x + 5, -2x + 6 = 5, -2x = -1, x = 1/2

Back

The student did not multiply all terms by the common denominator

Tags

CCSS.HSA.REI.A.1

Front

Find the error in solving the equation: 5x + 6 = 66. Steps: 5x - 6 = 66 - 6, 5x = 60, 5*5x = 60*5, x = 300.

Back

Student multiplied by 5 instead of dividing by 5.

Tags

CCSS.HSA.REI.A.1

Front

The objective when solving an equation is to...

Back

isolate the variable.

Tags

CCSS.7.EE.B.4A

Front

2 + 14a = -8 + 9a

Back

-2

Front

22 + 2a = 37 + 6 + a

Back

21

Front

Solve

Back

-16

Front

Solve

Back

6