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6-5=10x-5x -11+10=12y-9y
1 = 5x -1=3y
1/5=x -1/3=y
3) 21-6x=27-8x 4) 11x+5x-1=65x-36
-6x+8x=27-21 16x-1=65x-36
2x=6 -1+36=65x-16x
x=3 35=49x
35/49=x
5) 8x-473x=7x+x+14
8x-473x=8x+14
-473x=14
x=-14/473