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Basic Algebra (7th grade)

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  • x + 3 = ?; if x = 6
    x = 9
  • x + 2x - 4x = (simplify)
    -1x or -x
  • x + 5 + x = ?; if x = 6
    x = 17
  • 7x = 28
    x = 4
  • 27 = 5 + 2x
    x = 11
  • x/8 + 5 = 12
    x = 56
  • 40x + 80 = 120
    x = 1
  • x + 6 = 13
    x = 7
  • 3x + 3 = 18
    x = 5
  • x + 9 = -1.6
    -10.6
  • 3x + 2 = 14
    x = 4
  • 2x + 2a =? if x = +5 and a = +4
    18
  • z/16 = 4
    z = 64
  • x/3 = 4
    x = 12
  • x - 9 = -30
    x = -21
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