Algebraic Expressions & Equations

What is a numerical expression for

"the sum of 5 and 7"?

• 5 x 7

• 5 + 7

• 7 - 5

• 7 + 5

What is an algebraic expression for 

the difference of 7 and a number

(Hint:  Use the variable x for "a number")

03:13

• 7 - x

• 7 + x

• 7x

In the algebraic expression

15 - 5x

What is the coefficient?

• 15

• x

• 5

• 5x

 What is an algebraic expression for
"the quotient of 8 and y"?

•  
  
   $\frac{8}{y}$  
  
  ​
   

• 8y

• 8+y

• 8-y

What is an algebraic expression for 

seven more than thrice a number?

• 7n - 3

• 7n + 3

• 3n - 7

• 3n + 7

What is the variable for the expression

3x - 7 ?

• 3x

• x

• 7

• none

What is the value of x in 2x + 7 = 17

• 2

• 3

• 4

• 5

Find the value of y in

15 = y - 8

• 23

• 25

• 15

• 8

Find the value of y in the equation: x + y = 12 if x=7

• 4

• 5

• 6

• 7

Which is an Algebraic expression ?

• 2x + 7

• 6t - 3 = 9

• 12 = 4y

• 12 - 3