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Equations and Inequalities

Equations and Inequalities

Solving Equations with Multiple Variables Examples

Example 1

Suppose a rectangle has length 5 cm and width 2 cm. What is the area of the rectangle?

Example 2

Find the width of a rectangle with length 3 in and area 45 in2.

Example 3

Solve the formula C = 2πr for r.

Example 4

If the circumference of a circle is 40π, what is the radius of the circle?

Example 5

If 5x - 9y = 12, what is x when y = 3?