Question

use substitution to solve the system {2x-5y=-5, -2x+8y=-58

Answer 1

id rather just use common sense

Answer 2

3y = 63; y = 21

x = 10

Answer 3

thanks

Answer 4

actually it looks like you get 3y = -63 so y = -21 yes?

Answer 5

\[2x-5y=-5\]
\[-2x+8y=-58\] add to get
\[3y=-63\]
\[y=-21\] substitute back to get
\[2x-5\times -21=-5\]
\[2x+105=-5\]
\[2x=-110\]
\[x=-55\]

Answer 6

lol.... did i drop a negative