五年级经典解方程50题(0.5+x)+x=9.82 2(X+X+0.5)=9.8 25000+x=6x 3200=450+5X+X X-0.8X=6 12x-8x=4.8 7.5+2X=15 1.2x=81.6 x+5.6=9.4 x-0.7x=3.6 91x 1.3 X+8.3=10.7 15x 3 (27.5-3.5)x=4 3x816 7(x-2)=2x+33x+9=27 18(x-2)=270 12x=300-4x 7x+5.3=7.4 3x5=4.8 30x+25=85 1.48-2x=6 6x-12.83=0.06 410-3x=170 3(x+0.5)=21 0.5x+8=43 6x-3x=18 1.5x+18=3x 53-x2=8 0.273x=0.35 1.8x=0.972 x0.756=90 9x-40=5 x5+9=21 48-27+5x=31 10.5+x+21=56 x+2x+18=78 (200-x)5=30 (x-140)70=4 0.1(x+6)=3.30.4 4(x-5.6)=1.6 7(6.5+x)=87.5