 # Solve each equation. Show your work and check the solution. 1. 2. h – 2 = 23 3. –6x = – 42 4. 6 = 8 + y.

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Solve each equation. Show your work and check the solution. 1. 2. h – 2 = 23 3. –6x = – 42 4. 6 = 8 + y

 Step 1) Add or Subtract  Step 2) Multiply or Divide  Notice when we’re undoing, we work backwards for PEMDAS  We also do the opposite when undoing. ◦ If Homey says add, we want to subtract ◦ If Homey says times, we divide.

Solve the equation for the variable. Check the solution.  Subtract 2 from both sides.  Multiply each side by 7.  Check the solution. ? ?

Solve the equation for x. Check the solution. 12 – 5x = 2  Rewrite the equation by adding the opposite. 12 + (– 5x) = 2  Subtract 12 from both sides. – 12 – 12 – 5x = –10  Divide each side by (–5). – 5 – 5 x = 2  Check the solution. 12 – 5(2) ≟ 2 12 – 10 ≟ 2 2 = 2

 2N + 3 = 11  2N – 3 = 11

Solve each equation. Show your work and check the solution. 1. 2x – 8 = 12 2. –5 = + 1 3. 6m + 4 = 16 4. –8 + = 2

What do you think are the most common errors students make when solving a two-step equation? Why do you think this is?

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