Actmath Algebra

5fenix + 6victor + 4fenix - 2victor

• 7fenix + 4victor

• 9fenix + 2victor

• 5fenix + 6victor - 4fenix + 2victor

• 9fenix + 4victor

123 - 852

• -740

• -742

• -741

• -743

6+(4²-1)

• 13

• 21

• 25

• 9

-15+5+20

• -10

• 40

• -15

• 10

(4+3)x2³

• 56

• 28

• 54

• 45

-16÷-2÷4

• -2

• -4

• 2

• 4

(3 + 4)² - 32

• 7

• 112

• 17

• -7

-10-5-10+30

• -55

• 45

• -5

• 5

What is an algebraic                     expression for                 "the difference of r and 3"?

• r/3

• r + 3

• r - 3

• 3r

A symbol for an unknown value is called a _______________. It is usually a letter such as a, X or Y.

• Constant

• Coefficient

• Operator

• Variable