PLease help me understand this with the substitution method.

y=-5x-17

-3x-3y=3

can you please find x and y. I got x=4.25 and y=3 can you please tell me what I did wrong.

ilovepuppies1880 Mar 1, 2019

#1**0 **

OK,, SUBSTITUTION method

The FIRST equation tells you what y = Substitue this value of y in to the 2nd equation....

-3x - 3 (-5x-17) =3 and solve for 'x'......

then use this value of 'x' that you find and substitute back into EITHER of the equations to find the 'y' value

-3x + 15x +51 = 3

12x + 51 = 3

12x = -48

x = - 4 y = -5(-4)-17

y = 3

ElectricPavlov Mar 1, 2019

#2**+2 **

yes please i want to see what i did wrong to get those answers. Thank you A lot EP!!!

ilovepuppies1880
Mar 1, 2019