Question

what is the sum of two numbers is "-7." Two times the first number equals 4 the second number. Find the two numbers.

Answer 1

Answer:

$\sf \text{The numbers are \dfrac{-14}{3} and \dfrac{-7}{3} }$

Step-by-step explanation:

Let the numbers be x , y

Sum of two numers = -7

x + y = -7------------(I)

Two times the first number equals 4 the second number.

2x = 4y  ----------(II)

Divide both sides by 2

       $\sf \dfrac{2x}{2}=\dfrac{4y}{2}$

        x = 2y

Subtitute x = 2y in equation (I)

2y + y = -7

      3y = -7

       y = -7/3

Plugin y = -7/3 in equation (II)

$\sf 2x = 4*\dfrac{-7}{3}\\\\2x = \dfrac{-28}{3}\\\\x =\dfrac{-28}{3*2}\\\\x = \dfrac{-14}{3}$