Edgewood Math 7 - Home · Web view3x – 2 = x4y = 2y - 10 6 5 y + 8 = 4 5 y – 102.1x + 3 = 3.1x...

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8-5 Solving Equations w/Variables on Each Side To solve equations with variables on each side, use the Addition or Subtraction Property of Equality to write an equivalent equation with the variables on one side. Then solve the equation. 3x = x + 8 7x = 5x + 4 3x – 2 = x 4y = 2y - 10 6 5 y + 8 = 4 5 y – 10 2.1x + 3 = 3.1x – 2 Let’s try

Transcript of Edgewood Math 7 - Home · Web view3x – 2 = x4y = 2y - 10 6 5 y + 8 = 4 5 y – 102.1x + 3 = 3.1x...

Page 1: Edgewood Math 7 - Home · Web view3x – 2 = x4y = 2y - 10 6 5 y + 8 = 4 5 y – 102.1x + 3 = 3.1x – 2 1 2 p – 15 = 3 4 p – 3 3 8 p – 3 = 1 8 p - 5 A personal trainer charges

8-5 Solving Equations w/Variables on Each Side

To solve equations with variables on each side, use the Addition or Subtraction Property of Equality to write an equivalent equation with the variables on one side. Then solve the equation.

3x = x + 8 7x = 5x + 4

3x – 2 = x 4y = 2y - 10

65 y + 8 = 45 y – 10 2.1x + 3 = 3.1x – 2

12 p – 15 = 34 p – 3 3

8 p – 3 = 18 p - 5

Let’s try some!

Page 2: Edgewood Math 7 - Home · Web view3x – 2 = x4y = 2y - 10 6 5 y + 8 = 4 5 y – 102.1x + 3 = 3.1x – 2 1 2 p – 15 = 3 4 p – 3 3 8 p – 3 = 1 8 p - 5 A personal trainer charges

A personal trainer charges a one-time fee of $60 plus $25 for each individual session. A fitness club charges a yearly fee of $450 plus $10 for each session with a personal trainer. Write and solve an equation to determine for what number of sessions the costs will be equal.

Red Bird cruises charges $85 per day plus a one-time fee of $75. King Cruises charges $100 a day plus a fee of $30. Write and solve an equation to determine for what number of days the charge for the cruises will be the same.

Use the table below to find the number of miles a rental car must be driven for each option to cost the same for one day.