X-5.7=2.15 ,15 5X-2X=18, 3X+0.7=5 ,3200=450+5X+X ,X-0.8X=6 ,x+5.6=9.4, 52－x ＝15 ,1÷x ＝1.3 ,X+8.3=10.7,15x ＝3, 3x－8＝16, 7(x-2)=2x+3 ,3x+9=2718(x-2)=270, 12x=300-4x, 7x+5.3=7.4, 3x÷5=4.8, 30÷x+25=85, 1.4×8-2x=6, 410-3x=170, 3(x+0.5)=21, 0.5x+8=43, 6x-3x=18 ,1.5x+18=3x ,5×3-x÷2=8 ,0.273÷x=0.35, 1.8x=0.972 ,x÷0.756=90, 9x-40=5, x÷...
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