Simple Equations With Variables

Tell whether LHS = RHS or not 7n + 29 = 85 (n = 8)

• LHS is greater that RHS

• LHS is smaller that RHS

• LHS is not equal to RHS

• LHS is equal to RHS

The sum of three times x and 11 is 32. What is the equation of this statement?

• x + 11 = 32

• 3x + 11 = 32

• 3x + 32 = 11

Convert the following equation in statement form:

2n + 5 = 11

• Add 5 to two times n to get 11.

• Add n to two times 5 to get 11.

• Add 5 to n to get 11.

Which equation has x = 2 as a solution?

• 3 + x = 10

• 11 + x = 13

• 4x = 32

• 5x =25

Manu's father's age is 4 years more than three times Manu's age. Find Manu's age, if his father is 46 years old.

• 14

• 15

• 16

• 18

In the equation 2x + 3y = 19, what is/are the variable(s)? Choose the best answer.

• x

• y

• =

• Both x and y are variables

What branch of mathematics deals with equations with variables?

• Algebra

• Geometry

• Calculus

• Physics

Solve for k.... 31 - 3k = 10

• k = 10

• k = -10

• k = -7

• k = 7

What is a variable?

• It's a number equation.

• A letter representing an unknown number in an equation.

• The symbols in an equation that aren't letters or numbers.

• Any equation with an equals sign.

How do we figure out the value of a variable?

• Add up all the numbers in the equation.

• Multiply the variable by itself.

• Isolate the variable on one side of the equals sign.

• A variable has no set value.