(165) 4x+1.4×4=13.6(166) 3x÷5=2.4 (167) 2.2x÷55=0.2 (168) 26(0.3x-6.3)=46.8(169) 3.4x+0.2x=75.6 (170) 8.5+x=16.1 (171) 2x÷24=0.7(172) x÷3=4.4 (173) 3x+18x=210 (174) 77-x=36(175) 10x+2×91=242 (176) 12x-9x=24 (177) ...