Can someone please help me combine 10x+4y=24 and -6x-4y=8 using the elimination method?? what is the value of x?

Question

jdoe0001 · Answer

$\begin{array}{llll}
10x+4y=24\
-6x-4y=8\
\hline\
4x+0y=32
\end{array}$

notice, we didn't have to multiply either for anything, since to eliminate the "y", we already have a + and - version atop of each other
see what was done?

campbell_st · Answer

seeing the terms in y have the same coefficients with opposite signs... 

just add the 2 equations

10x + 4y = 24
-6x -  4y =   8
---------------

then solve for x

grt x and then subsitute into either equation

anonymous · Answer

yes i see how you combined but how do i find value of x?

anonymous · Answer

@ali1029  did you do lesson 8 unit 5?

anonymous · Answer

@campbell_st i got y=-14 and x=8

anonymous · Answer

How do i find the coordinates of the point of intersection of these two lines?

campbell_st · Answer

your answers make sense, to check you can substitute them back and make sure

10*8 + 4*(-14) = 80 - 56

  well thats 24... which is what it states in the 1st equation