Solving Equations Multi-Step Equations

Solve the equation:
3(x - 1) = 2x + 9

• x = 12

• no solution

• x = 10

• x = 6

Solve

• 5

• 2

• No Solution

• Infinitely Many Solutions

Solve

• 2

• -8

• No Solution

• Infinitely Many Solutions

Solve for n:
2m - n = 8

• n = 2m - 8

• n = -2m - 8

• n = 2m + 8

• n = -2m + 8

Solve the literal equation for the given variable.

• 2A/h

• 2/(h)

• 2Ah

• Ah/2

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

• no solution

• all real numbers

• 7

• 3

What is the 1st step in solving the following equation?

3x + 7 = x - 21

• Move variables to same side

• Add 7 to both sides

• divide both sides by 3

• Subtract 21 from both sides

What is the 1st step in solving the equation?

• -2x = 1-x

• -4x = 1 - x + 2x

• 8x = 1 - x

• 2x - 4x = 0

Which step is incorrect?

120 = 4(7a+2)

Step 1 Distribute

120 = 28a + 8

Step 2 Subtract 8 from both sides

112 = 28a

Step 3 Divide both sides by 28

a=4

• Step 1

• Step 2

• Step 3

• Problem is worked correctly

Which step is incorrect?

120 = -4(7a+2)

Step 1: 120 = -28a - 8

Step 2: 112 = -28a

Step 3: a=-4

• Problem is correct

• step 1

• step 2

• step 3