(58) 93÷x=3 (59) 0.3x+0.4×23=12.8 (60) 12x+17x-48=271(61) 4x-3=4.6 (62) 4x=0.8 (63) x÷14=8(64) x-56=19 (65) 3.3x+2.3x-3.5=18.9 (66) 3x+40×0.4=18.7(67) 3.6+5x=15.1 (68) (16x-22)÷2=77 (69) 4.6x+0.7×19=22.5(70) 2(3...