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3-8 Solving Equations and Formulas
ObjectiveStudents will be able to solve equations for given variables.
• When solving formulas for a specific variable, we are still going to solve the same way we solve single variable equations.
• The goal is still going to be to isolate the specified variable terms on one side of the equation, and all other terms on the other side of the equation.
• We then want the coefficient on our specified variable to be a 1.
How would you solve this problem?
Example 1: Solve each equation or formulas for the variable specified.a)
b)
c)
d)
e)
Try these.f) g)
h) i)
Try these.
Example 2: Solve each equation or formula for the specified variable.a) b)
c) d)
Try these.e) f)
g)
Example 3: Solve each formula for the specified quantity.a) for width
Find the width when the perimeter is 36 inches and the length is 3 inches.
Try this.b) for height
Find the height of a rectangular prism when the volume is 36 cubic feet, the length is 2 feet, and the width is 3 feet.