02-06-2021
Mathematics

contestada

-2x + 3y = 18. x = -y + 1

2x 3y 18 x y 1 class=

Respuesta :

drmallery drmallery

02-06-2021

Answer:

D. X=-3, y=4

Step-by-step explanation:

-2x+3y=18 equation 1

x=-y+1 equation 2

-2(-y+1)+3y=18 replace x value of equation 2 into equation 1

2y-2+3y=18

5y=20

y=4

solve for x by replacing y value into either equation.

x=-y+1

x=-4+1

x=-3

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