Elimination method and substitution methods
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Elimination method
1) 5r-6s=-10
6r+5s=49
2) 1/3x + 1/1y=2/3
2/3x + 3/5y=1/5
3) 5x+3y=-12
6x-3y=-54
4) p=47+q
8p=6q+404
Substitution method
1) x+y=5
y=x-3
2) r-45=0
6r-5s=133
3) 6x+3y=-36
-7x+y=60
System of equation by graphing:
1) y-2x=0
y=4x-1
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