How do you solve the following system?: 2x +5y =-1 , -5x -3y = 2
1 Answer
Apr 29, 2017
Explanation:
2x+5y=-1 " " stackrel (xx 3) rarr " " 6x+15y=-3
-5x-3y=2 " " stackrel (xx 5) rarr " " -25x-15y = 10
color(white)(XXXXXXXXXXXXX)underline(color(white)(XXXXXXXXXX))
color(white)(XXXXXXXXXXXXXXX)-19x = 7
color(white)(XXXXXXXXXXXXXXXXXX)darr
color(white)(XXXXXXXXXXXXXXXX)x = -7/19
Then from
y = 1/5(-1-2x)
color(white)(y) = 1/5(-1-2(color(blue)(-7/19)))
color(white)(y) = -1/19
