Solving Multi-Step Equations

What is the first step in solving the equation 2a - 4(a - 5) = 10

• Add 4 to both sides
• Add the 2a and a 
• Distribute 4 to a and -5
• Distribute -4 to a and -5

Tags

CCSS.8.EE.C.7B

8 = (³⁄₄)a +12 - a + 4

• 32
• -6
• -4
• 4

Tags

CCSS.8.EE.C.7B

4(a + 3) = -32

• -11
• -44
• -20
• -8

Tags

CCSS.7.EE.B.4A

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

Tags

CCSS.HSA.REI.A.1

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

Tags

CCSS.HSA.REI.A.1

8v - 4(v + 8) = 8

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

2x - 3 + 4x = 27

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

5x - 4 + 2x = 3

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

3x + 2(4x - 4) = 3

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B

2x + 3(5x - 7) = 47

Mathematical Equivalence

ON

Tags

CCSS.8.EE.C.7B