solve the system of equation
3x=-5y
6x-7y=17

Question

solve the system of equation
3x=-5y
6x-7y=17

anonymous · Answer

x= 5/3; y= -1

anonymous · Answer

what did you do to get that answer

anonymous · Answer

3x=-5y (add 5y to the left side) 3x+5y=0. Then you stack the two equations on top of each other and eliminate the x variable (you can eliminate y but its easier to eliminate x). So it should look like: 3x+5y=0
                                       6x-7y=17
Your trying to eliminate x so multiply the top equation by -2 (-2*[3x+5y=0]). It should look like this:
                                      -6x-10y=0
                                       6x-7y=17
Adding them together you get :
                                                -17y=17
Solve for y:
                                                   y=-1
Plug y into the first or second equation and solve for x
                                                   3x=-5(-1)

                                                    x=5/3
Sorry it took so long for me to type. Wanted to explain it as best I could

anonymous · Answer

its okay thanks though i think you explained it better then my teacher