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Equations Galore

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    Review on solving equations
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  • Solve for w: V=lwh
    w = v / (l h)
  •  15
  • Solve for x: ax + b = c
    x = (c - b) / a
  •  15
  • Solve for l: P = 2(l + w)
    l = P/2 - w
  •  20
  • Solve for b: A = (a + b)/2
    b = 2A - a
  •  20
  • Juan’s cell phone company charges $35 a month for phone service plus $0.50 for each text message. How many text messages does Juan send in a month if his bill was $52?
    52 = 35 + .5x x = 34
  •  25
  • Friendship’s soccer team purchased uniforms and equipment for a total cost of $912. The equipment cost $612, and the uniforms cost $25 each. How many uniforms did the school purchase?
    912 = 612 + 25x x = 12
  •  25
  • The sum of two consecutive numbers is 73. Find both numbers.
    x + x + 1 = 73 36, 37
  •  25
  • The length of a rectangle is 5 cm less than three times its width. If the perimeter of the rectangle is 54 cm, find the length and width.
    54 = 2(3x - 5) + 2(x) width = 8 cm length = 19 cm
  •  25
  • Solve: - 5x + 9 = -1
    x = 2
  •  5
  • - 3 - 6x = 69
    x = -12
  •  5
  • 3 + 7x - 4x = - 15
    x = -6
  •  15
  • 20 = 6x + 7x + 7
    x = 1
  •  15
  • 3(9 + 7x) = 27
    x = 0
  •  15
  • 7(1 + 2x) = - 63
    x = -5
  •  15
  • 10 - 5x = x + 52
    x = -7
  •  15
  • 5n + 34 = −2(1 − 7n)
    n = 4
  •  20