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8x+22x=161+18+13
30x=192/:30
x= 192/30
x= 6 12/30= 6 2/5
-7,2x+6+4x=9,5-2,2x+7,5+81
-7,2x+4x+2,2x= 9,5+7,5+81-6
-x=92
-x=92/:(-1)
x=-92