Solving a system of equations

8x + 3y = -4 ----(1)
<br>
<br>3x + 4y = 10 ----(2)
<br>
<br>Multiply (1) by 3 and (2) by 8 and then subtract one from the other to eliminate x.
<br>
<br>(1)*3 ===> 24x + 9 y = -12 ---(3)
<br>(2)*8 ===> 24x + 32y = 80 ---(4)
<br>
<br>Now (4)-(3) == > 23 y = 92 which gives y = 92/23 = 4
<br>
<br>Substitute this value of y in (2)
<br>
<br>3x + 4*4 = 10
<br>
<br>3x = 10-16 = -6 which gives x as -2
<br>
<br>Solution x = -2 and y = 4
<br>
<br>

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!