13536315393243412×3×4 9×5÷7 12÷5÷8 8÷10×5 9×5×2 2÷(5×3)
351251251521315×(1÷3) 12÷(4÷5) 9×6×5 6×7×5 6×17+6×17 6×(5×7)
9517252323533(6+6)×17 4+3×6 18×(3-9) 7÷3-21 4÷3÷20 4×2+4×2
11524259912515145+9÷9 15×6×12 9×13+13÷9 12×(4+6-3) 7×12×15 9×5÷9
5383112173
(1+15)×10 36×8+36×8 4÷3-5 98÷(15÷7) 21×(1+ ) 12×( ÷ )
7510
18563362111173411 ×24+24× × ÷ + ÷ - × ( - )× 22÷( + ) 99925107731234841556
5111251633510
÷3- 1÷( ÷ ) + - 35÷( ÷ ) ×( - ) 7214531265710721
13833592171
× ×39 ×5 + ×5 - × × + × ×39 132111181061032132
7
解方程
1652133x=5 2x=10 6x=25 3x=6 9x=6 5x=7 4x=4
5314222178x=12 8x=7 3x =6 8x =1 9x=3 3x= 4x=35
37112x =16 1.5x =28.5 8x=42 4+10x=102 x-4x=8 x-0.8x=22 20% x =
30
2411133193x+2x=42 x-4=2 x+4=6 6 x+2x=9 2x -3x=2 x+2=12
x-5
8 x =15 23 x = 29 25 x-310 x =120 x ÷58 = 112 5 + 1
3
x =13
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