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Objective The student will be able to:
solve literal equations (formulas) for a specified variable. SOL: A.4a Designed by Skip Tyler, Varina High School
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1) Solve 2x - 4y = 7 for x To get x by itself, what is the first step?
Add 2x Subtract 2x Add 4y Subtract 4y Answer Now
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+ 4y +4y 2x = 7 + 4y 2 2 1) Solve 2x - 4y = 7 for x
Add 4y to both sides Simplify Divide both sides by 2 This fraction cannot be simplified because both terms in the numerator are not divisible by 2.
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2) Solve 2x - 4y = 7 for y To get y by itself, what is the first step?
Add 2x Subtract 2x Add 4y Subtract 4y Answer Now
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- 2x - 2x -4y = 7 - 2x -4 -4 2) Solve 2x - 4y = 7 for y
Subtract 2x from both sides Simplify Divide both sides by -4
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3) Solve for y. What is the first step?
Multiply by 3 Divide by 3 Add a Subtract a Answer Now
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y + a = 3c -a -a y = 3c - a 3) Solve for y:
Clear the fraction – multiply both sides by 3 Simplify Subtract a from both sides y + a = 3c -a -a y = 3c - a
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5) The formula for the volume of a rectangular prism is V = LWH
5) The formula for the volume of a rectangular prism is V = LWH. Which equation solves the formula for L? L = V - WH Answer Now
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6) The formula for the volume of a pyramid is V =
6) The formula for the volume of a pyramid is V = Which equation solves the formula for h? h = 3Vb Answer Now
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