Question

What is the value of x in this proportion?

Answer 1

Answer:

  (a)  -20 1/2

Step-by-step explanation:

The proportion can be solved using "cross multiply" as the first step. This eliminates the fractions and turns it into a linear equation.

  2/7 = -5/(x +3) . . . . . given

  2(x +3) = -35 . . . . . . multiply by 7(x +3)

  2x = -41 . . . . . . . . . simplify, subtract 6

  x = -20 1/2 . . . . . . divide by 2