3x-2y:5x-4y= 6:5. Find x:y=?
(Note* I got to the part where 14y:15x, don't know if there is even a step like that).

Question

3x-2y:5x-4y= 6:5. Find x:y=?
(Note* I got to the part where 14y:15x, don't know if there is even a step like that).

anonymous · Answer

Someone please help?

nali · Answer

just equal to each equaiton to its solution as the following:

3x-2y=6
5x-4y=5

then solve one of them for y 
and then substitute in the other equation

3x-2y=6

-2y=6-3x

devide by -2

y=-3+3/2x


then subtitute that in the other equaiton

5x-4y=5

5x-4(-3+3/2x) = 5

5x+12-6x=5

-x+12=5

move the 12 to the other side and then devide by negative one to get the value for x. which is 7

then just plug that in the other equaiton that i changed to the y=-3+3/2x

                                                                                         = -3+3/2(7)
                                                                                         = 7.5