The equations were multiplied by constants and added together to determine that the value of x in the system of equations is - 20. One-fifth x minus one-third y = negative 1 Negative three-fourths x + one-third y = 12 What is the value of y? - 15 - 9 9 15

Step-by-step explanation:

Given:

1. 1/5x - 1/3y = - 1

2. - 3/4x + 1/3y = 12

Multiplying equation 1 by 15 and equation 2 by 12

3. 3x - 5y = - 15

4. - 9x + 4y = 144

and then Solving both equations simultaneously, since x = - 20 as stated in the question and by confirmation,

Using equation 3 or 4 to solve for y,

3 (-20) - 5y = - 15

-5y = 60 - 15

y = 45/-5

= - 9

y = - 9