Intro to Equations and Inequalities

Which choice describes the step needed to isolate the variable? (Tap outside of the gray box to see the equation.)

• Divide both sides by 11

• Multiply both sides by 11.

• Add 11 to both sides.

• Subtract 11 to both sides.

y - 4.6 = 12

• 16.6

• 5.8

• 7.4

• Answer not Given

Which equation has x = 5 as the solution?

• x + 15 = 10

• 2x = 5

• 2x = 10

x - 62 = 123
How should you show your work to isolate the variable and solve the equation?

• Add 62 to each side. 

• Subtract 62 from each side.

• Multiply each side by 62.

• Add 123 to each side.

a symbol for an unknown value; usually a letter (such as a, x, or y) is the symbol used

• constant

• variable

• coefficient

• term

a mathematical sentence stating that two expressions are equal

• term

• coefficient

• equation

• variable

To solve an equation, the goal is to __________ the variable on one side.

• Evaluate

• Leviate

• Isolate

• Reciprocate

What are inverse operations?

• Absolute values

• Opposite operations used in isolating a variable

• Operations used for only inequalities

• Unknown quantity represented by a letter or symbol

3c + 5 = 23

• c = 3

• c = 6

• c = 7

• c = 18

Solve 2x - 3 = 1

• 3

• 2

• 1

• -2