Solving Equations One Two Multistep

What is the first step in solving the equation 2a - 4(a - 5) = 10

• Add 4 to both sides

• Add the 2a and a 

• Distribute 4 to a and -5

• Distribute -4 to a and -5

Tags

CCSS.8.EE.C.7B

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

-(n - 8) = -2

• 6

• 10

• -10

• -6

Tags

CCSS.7.EE.B.4A

4(3q+10)=6(2q-9)

• 40

• -54

• No Solution

• Infinite Solutions

Tags

CCSS.8.EE.C.7A

Which of the equations shown have infinitely many solutions? Select all that apply.

• 3x– 1 = 3x+ 1

• 2x– 1 = 1 – 2x

• 3x– 2 = 2x– 3

• 3(x– 1) = 3x– 3

• ​2x+ 2 = 2(x+ 1)

Tags

CCSS.8.EE.C.7A

2x - 3 + 4x = 27

• 12

• 4

• 5

• 15

Tags

CCSS.8.EE.C.7B

Solve for v.

• 60

• -3

• 15

• 3

Tags

CCSS.7.EE.B.4A

4x+9=-2x-15

• x=-4

• x=-24

• x=-6

• x=1

Solve the equation a =m–n

for the variable n.

• n=a+ m

• ​n=a–m

• n=m–a

• n=–m–a

Tags

CCSS.HSA.REI.B.3

Tonya’s dog-walking service charges a flat rate of $20 per month, plus $3 per mile that each dog is walked. Beth does not charge a monthly fee for her dog-walking service, but she charges $5 per mile that each dog is walked. Write and solve an equation to find the number of miles m for which Tonya and Beth would charge the same amount.