Homework Help: Algebra

Posted by Liz on Sunday, March 21, 2010 at 4:23pm.

Solve by the elimination method
2r-5s=1
5r+2s=46

The solution is _______, or there are infinitely many solutions, or there is no solution

Algebra - PsyDAG, Monday, March 22, 2010 at 12:09pm
4r - 10s = 2 (multiplied by 2)
25r +10s = 230 (multiplied by 5)

Add the two equations.

29r = 232

r = 8
Algebra - Anonymous, Thursday, March 25, 2010 at 4:57pm
which of these is an easy way to solve the following system using the sustitution method:-3x+4y=11 and x+6y=0

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