2233X- X= 2X + = 70%X + 20%X = 3.6 4755 X×3=20×1 25% + 10X = 4 X - 15%X = 68 54 X+38X=121 5X 6X+5 =13.4 X÷2=7716 X 1235 ÷X=10 X÷ 62635=45×1325 310X-21×23=4 6X+5 =13.4 5X=1519 23X÷14=12 5-3×5=52217 3X÷14=12 34X1438 3X=38 +738X=4 4X-6×23=2 35 X = 2572 89 X = 16×1651 x-3 ×9 = 29 12x + 16x = 4 x14x20 2(x2.6)8 25 X-13 X=310 4χ-6=38 8X=4 X÷4=152115528 35X=2572 89X=16×1651 4 X÷ 4+0.7X=102 2X+1X=42 X+1X=105 324626=3545÷13 X-0.25=1 X=30% 2544 X-3X=400 X-0.125X=8 36 = 3 8X4 31313X+ X=18 X×( + )= x-0.375x=5 676812 x×2+1=4×3 X-3X=12 5 X-2.4×5=8 3287 33210.36×5- x = (x- 4.5) = 7 x- 25%x = 10 4532 4x-0.8x =32 20 x-8.5= 1.5 x- x -4= 21 5 38X+25%X=90 X- X= 8-3X=23 8479 3-1X= 123327 3X= X÷= ÷X= 5108716259 15X÷2=60 4X+X=3.15 10 本文来源:https://www.wddqw.com/doc/df62f904f524ccbff0218418.html