Algebra Review

Algebra Review

Let's See What You Remember!

Equations

Isolate the variable by using inverse operations.

Isolate = by itself

Variable = letter representing an unknown number

Inverse Operations = opposite (add/subtract or multiply/divide)

One Step Equations

Undo the operation to solve for your variable.

Multiple Choice

Solve for b.

9b=18

• 9

• 2

• 27

• -11

Multiple Choice

Solve for x.

x + 17 = 4

• 21

• -13

• 68

• $\frac{4}{17}$

Two Step Equations

Undo the operations while following reverse of PEMDAS.

Multiple Choice

Solve for n.

-6n + 6 = 60

• -20

• 18

• -9

• -16

Multiple Choice

Solve for x.

 $\frac{x}{5}-10=-10$  

• 0

• 18

• -25

• 1

Multiple Choice

Solve for r.

 $-6r-9=111$  

• -6

• -17

• 11

• -20

Multiple Choice

Solve for x.

 $8\left(1+x\right)=-8$  

• 10

• 7

• -2

• 17

Multi-Step Equations with Variables on One Side

1. Distribute (if needed)

2. Combine like terms (if needed)

3. Solve the remaining equation.

Multiple Choice

Solve for a.

-a + a = 0

• Infinite Solutions

• No Solution

• 0

• 1

Multiple Choice

Solve for x.

 $3\left(1+7x\right)-7=-88$  

• -12

• -4

• 16

• Infinite Solutions

Multi-Step Equations with Variables on Both Sides

1. Distribute (if necessary)

2. Combine Like Terms on the same side (if necessary)

3. Use opposite operations to get like terms together across the equal sign.

4. Solve!

Multiple Choice

Solve for n.

 $n+14\ =\ 5n-2$  

• 4

• 0

• 2

• -1

Multiple Choice

Solve for r.

 $-26+4r=-2\left(3-4r\right)$  

• 7

• -4

• 11

• -5

Proportions

1. Cross Multiply

2. Distribute (if necessary)

3. Combine like terms (if necessary)

4. Solve!

Multiple Choice

Solve the proportion for x.

 $\frac{10}{5}=\frac{x}{2}$  

• 4

• 7.494

• 2

• 2.3

Multiple Choice

Solve the proportion for x.

 $\frac{9}{8}=\frac{10}{\left(x-3\right)}$  

• 11.89

• 1

• 7.05

• -2.5

Poll

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