Learning Check - Math 8 Linear Equations

Solve the equation below for the variable shown:

 $3x+6=39$  

•  $x=3$  

•  $x=8$  

•  $x=11$  

•  $x=15$  

Select the two steps that you would use to solve the equation below:

 $3x+6=39$  

• Add 6 to both sides of the equation

• Subtract 6 from both sides of the equation

• Multiply both sides of the equation by 3

• Divide both sides of the equation by 3

Select the two steps that you would use to solve the equation below:

 $-2x-7=13$  

• Add 7 to both sides of the equation

• Subtract 7 from both sides of the equation

• Multiply both sides of the equation by -2

• Divide both sides of the equation by -2

Solve the equation below for the variable shown:

 $\frac{x}{8}+11=13$ 

•  $x=\frac{1}{4}$ 

•  $x=3$ 

•  $x=13$ 

• $x=16$

Select the two steps that you would use to solve the equation below:

 $27x+45=153$ 

• Add 45 to both sides of the equation

• Subtract 45 from both sides of the equation

• Multiply both sides of the equation by 27

• Divide both sides of the equation by 27

A coefficient is __________.

• the variable
• a constant
• an exponent
• the number that comes before the variable

A constant term has ______.

• no exponents
• no variables
• no numbers
• no letters

Simplify 5(2 - 7n)

• 52 - 57n

• 10 - 7n

• 10 - 35n

• 10 + 35n

Simplify
14(b – 10).

• 4b
• b – 140
• 14b – 140
• 14b – 10

2(4k + 7)

• 4k-9

• 4K+9

• 8k-14

• 8k+14