You can put this solution on YOUR website! 1.) 5R-4S=-17
2.) 4R+5S=52
We need to multiply both sides of each of the equations by values that will produce a common coefficient on either x or y in both equations so that when the equations are either added together or subtracted one of the variables is eliminated:
We can eliminate R by multiplying the first equation by 4 and the second equation by 5:
4*5R - 4*4S = 4*-17
5*4R + 5*5S = 5*52
Simplifying these we have:
3.) 20R - 16S = -68
4.) 20R + 25S = 260
Subtracting equation 4.) from 3.) we then have:
-41S = -328
S = 8
Substitute 8 for S in either of the original two equations and calculate R.
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