Maths-
SAT
Easy

Question

If 7x + 21 = -2, what is the value of x + 3 ?

  1. -5
  2. -2
  3. negative 5 over 7
  4. negative 2 over 7

The correct answer is: negative 2 over 7


    7x + 21 = -2
    7x = 2 – 21
    7x = 2.3
    7x + 2.3 = 0
    x equals fraction numerator negative 23 over denominator 7 end fraction
    x plus 3 equals fraction numerator negative 23 over denominator 7 end fraction plus 3
    equals fraction numerator negative 23 plus 21 over denominator 7 end fraction equals fraction numerator negative 2 over denominator 7 end fraction

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