Solving and Writing Two-Step Equations

Solve   2y - 4 = -10

• y = -7

• y = 3

• y = -3

• y = 7

Solve  12 - 6y = 24

• -1

• -2

• -3

• -4

x/5 - 13 = 20

• 145

• 165

• 180

• 190

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides

• Subtract 11 from both sides

• Add 11 to both sides

• Divide 3 on both sides.

-3a + 8 = 14

• a= -2

• a= -7.5

• a= 2

• a= 6

Solve for a

• a= -2

• a= -7.5

• a= 2

• a= 6

Pizzazz Publications is having some books printed. The printer charges $800 plus $5 per book. What equation could help me find how many books can be printed for $4,000?

• 800 + 5x = 4000

• 800x + 5 = 4000

• 4000 + 5x= 800

• 800 + 5 = 4000

Samuel bought 3 tires for $79.95 each and some rims for $59 each. He spent a total of $534.85. Which equation could be used to find the number of rims, r, Samuel bought?

• 3(79.95) - 59r = 534.85

• 79.95r - 59(3) = 534.85

• 3(79.95) + 59r = 534.85

• 79.95r + 59(3) = 534.85

Which equation matches the following situation? 331 students went on a field trip. Six buses were filled and 7 students traveled in cars. How many students were in each bus?

• n= # of students in each bus; 6n + 7 =331

• n=# of buses; 6n + 7 =331

• n= # of students in each bus; 6 + 7n =331

• n= # of students in each bus; 6n - 7 =331

33 = 4a - 7

• a=-10

• a=10

• a=4.5