Question

what am i doing wrong?? for x i get 0=24
substitution method
-4x+y=7 and 12x-3y=3

Answer 1

When you get an equation like 0 = 24, that means the system is inconsistent. This is assuming you did everything correctly.

Answer 2

An inconsistent system has no solutions.

Answer 3

as jim_thompson5910 said, it'd be inconsisten and thus has no solutions

if you solve the 1st equation for "y", what do you get?

Answer 4

i get y=87

Answer 5

87? whatever happened to "x"? it went "missing in action"

Answer 6

for the first equation i get y=7+4x i thought you meant what y is when you're already substituting x for y

Answer 7

ohh yes

Answer 8

.... actually... you're correct it does give 0 = 24

that means as jim_thompson5910 said

is inconsisten or has no solution

Answer 9

Thank you