2x-y=5
9x-4y=23
use method of substitution

Question

2x-y=5
9x-4y=23
use method of substitution

alexwee123 · Answer

solve out for either x or y in one of the equations then sub it in for the other equation

anonymous · Answer

first choose which equation you want to work with
2x-y=5                   <     -----
9x-4y=23                <     ----

anonymous · Answer

2x-y=5

anonymous · Answer

ok 
next step
what variable to want to solve the equation for
x
or
y

anonymous · Answer

y

anonymous · Answer

ok 
next 
if you you solve the equation for y
what will it look like?

anonymous · Answer

5=2x-y??

anonymous · Answer

if you are solving for y
y is supposed to be 
isolated =  by itself

anonymous · Answer

ok. how would that be written?

anonymous · Answer

to solve equations you know that any operations performed one side of the equals sign must be performed on the other side right?

anonymous · Answer

so 
how do i get rid of this
          |
          v 
         2x-y=5