Algebra Quiz

What is an equation in algebra?

• A statement with numbers only

• A statement with letters only

• A statement with an equals sign

• A statement with no operations

In the equation $ x + 7 = 21 $, what is the value of $ x $?

• 14

• 21

• 7

• 28

What is the purpose of reversing operations in solving equations?

• To make the equation more complex

• To find the value of the variable

• To eliminate the variable

• To change the variable

What does the term "variable" refer to in algebra?

• A fixed number

• A letter representing an unknown value

• A mathematical operation

• A constant value

Solve for $ x $ in the equation: $ x - 6 = 12 $.

• 18

• 6

• 12

• 0

Solve for $ x $ in the equation: $ x - 5 = 6 $.

• 11

• 1

• 5

• 6

Solve for $ x $ in the equation: $ 14 = x + 3 $.

• 11

• 17

• 3

• 14

Solve for $ x $ in the equation: $ 7 = x - 5 $.

• 12

• 2

• 5

• 7

Solve for x in the equation: 7 = 6x - 5.

• x = 2

• x = 1

• x = 0

• x = -1

Solve for x in the equation: 13 = 7x - 1.

• x = 1

• x = 2

• x = 3

• x = 4