i need help solving these systems by using elimination. (HELPER WILL GET A METAL)
8x+9y=15
5x-2y=17

Question

i need help solving these systems by using elimination. (HELPER WILL GET A METAL)
8x+9y=15
5x-2y=17

mathmale · Answer

If you're to eliminate one of the variables (x or y), you generally have to multiply one or both of the two equations in such a way as to obtain equal coefficients in the two equations for either x or y.  For example, multiplying the first equation by 2 makes the y term of that equation equal 18y, and multiplying the 2nd eq'n by 9 makes the y term of that equation equal -18y.  That's good, because y will disappear when you combine the two modified equations.  Do this, please, and see if you can now solve the resulting one equation forx.

arbyj · Answer

oh okay, thank you!

mathmale · Answer

How'd you do?  Were you able to find the value of x?  y?