Two-Step Equations

3p - 15 = 45

• 30
• 10
• 50
• 20

-x + 10 = 15

• -5
• -25
• 20
• 7

-28 = 5x - 3

• -5
• 10
• 2
• -8

Tom has x dollars at the start of the day. At the end of the day he has $47.35 less than he started with.

He has $12.65 at the end of the day.

Write an equation to find how much money Tom had at the start of the day.

• 47.35 - x = 12.65

• 47.35x = 12.65

• x + 12.65 = 47.35

• x - 47.35 = 12.65

Marco(m) earned half as much money as Aaron(a).

Aaron earned $40.

Write an equation to solve for Marco's money.

• m = a/2

• m = 2a

• a = m/2

• a = 2m

x - 47.35 = 12.65

• x = 60

• x = 34.70

• x = - 60

• x = - 34.70

Bill's phone service charge is $27 per month(m) and there's a one-time fee of $45. Tom has

$207, how many months can he afford the phone plan?

Write an equation.

• 207 = 45m +27

• 45 = 207m - 27

• 207 = 27m 45

• 27 = 45m + 207

Solve

207 = 27m + 45

• 3

• 4

• 9

• 6

Solve

4(x + 8) = 44

• 9

• 3

• 13

• -3

-3(x + 5) = -18

What is your first step AFTER distributing?

• Subtract 15 from both sides

• Add 15 to both sides

• Divide by 3

• Divide by -3