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LITERAL EQUATIONS

LITERAL EQUATIONS. Answer Now. Solve 2x - 4y = 7 for x To get x by itself, what is the first step?. Add 2x Subtract 2x Add 4y Subtract 4y. Solve 2x - 4y = 7 for x. + 4y + 4y 2x = 7 + 4y 2 2. Draw “the river” Add 4y to both sides Simplify

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LITERAL EQUATIONS

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  1. LITERAL EQUATIONS

  2. Answer Now Solve 2x - 4y = 7 for xTo get x by itself, what is the first step? • Add 2x • Subtract 2x • Add 4y • Subtract 4y

  3. Solve 2x - 4y = 7 for x + 4y + 4y 2x = 7 + 4y 2 2 • Draw “the river” • Add 4y to both sides • Simplify • Divide both sides by 2 • Does it simplify? This fraction cannot be simplified because both terms in the numerator are not divisible by 2.

  4. Answer Now Solve 2x - 4y = 7 for yTo get y by itself, what is the first step? • Add 2x • Subtract 2x • Add 4y • Subtract 4y

  5. Solve 2x - 4y = 7 for y - 2x - 2x -4y = 7 - 2x -4 -4 • Draw “the river” • Subtract 2x from both sides • Simplify • Divide both sides by -4 • Does it simplify further? Nope!

  6. Answer Now Solve for y.What is the first step? • Multiply by 3 • Divide by 3 • Add a • Subtract a

  7. Solve for y: • Draw “the river” • Clear the fraction – multiply both sides by 3 • Simplify • Subtract a from both sides • Simplify y + a = 3c -a -a y = 3c - a

  8. Answer Now Solve for y: 4x – 2y = 12 • -4x + 12 • 4x - 12 • -2x + 6 • 2x - 6

  9. Solve for y: 4x – 2y = 12 - 4x - 4x -2y = 12 – 4x -2 -2 y = -6 + 2x or y = 2x - 6 • Draw “the river” • Subtract 4x from both sides • Simplify • Divide both sides by -2 • Does it simplify? Yes!

  10. Answer Now The formula for the volume of a rectangular prism is V = LWH. Which equation solves the formula for L? • L = V - WH

  11. Answer Now The formula for the volume of a pyramid is V = . Which equation solves the formula for h? • h = 3Vb

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