Question

how do i do this problem?
x=9-4y
x+4y=11

i need step by step help

Answer 1

take the 1st equation and substitute it into the 2nd equation

(9 - 4y) + 4y = 11

then solve... interesting solution.

Answer 2

i would get an answer that looks like this x=99-48y which is an empty solution

Answer 3

no solution

Answer 4

here condition of no solution will apply where a1/a2=b1/b2 is not equal to c1/c2