(1)x÷6-3=68, x÷6-3+3=68+3, x÷6=71, x÷6×6=71×6, x=426;(2)x÷1.2+2=8, x÷1.2+2-2=8-2, x÷1.2=6, x÷1.2×1.2=6×1.2, x=7.2.