一、解方程(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 7.52X=15 1.2X=81.6 X+5.6=9.4 15X 3 3X8 16 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 3(X+0.5)=21 0.5X+8=43 6X-3X=18 1.5X+18=3X 53-X2=8 0.273X=0.35 X-7.7=2.58 5x-3x=68 4(4x-1)=3( 22-x)7(2x-6)=84 5(x-8)=3x 7x-7=6x+4(22-x)=68x 8x-6x+30=12x+15 7(x+20)=5x+60240(x-7)=30 (20-8x)3=2x+1 (6x-40)8=5x-8128x=3 (21+4x)x2=10x+14 153x=51.48-2x=6 6x-12.83=0.06 410-3x=1703（ x+0.5）=21 0.5x+8=43 6x-3x=181.5x+18=3x 5 3-x2=8 1.8x=0.972 x5+9=21 48-27+5x=31
