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- 6x-15y=33
---------------
-13y=17
y=17/13
y=1.3
2) 2x-5(1.3)=11
2x-6.5=11
2x=11-6.5
x=17.5/2
x=8.75
3) 2(8.75)-5(1.3)=11
17.5-6.5=11
11=11