60 поделить икс -- 10 икс * 9 -- 99 икс + 86--98
60 : х = 10 х = 60 : 10 х = 6 60 : 6 = 10 ----------------- 9х = 99 х = 99: 9 х = 11 11*9 = 99 ----------------- x + 86= 98 x = 98 - 86 x = 12 12 + 86 = 98
60:x=10 x=60:10 x=6 ____________ 60:6=10 10=10 9x=99 x=99:9 x=11 _____________ 9•11=99 99=99 x+86=98 x=98-86 x=12 ______________ 12+86=98 98=98