300×5=1500, 840÷4=210, 420×1=420, 96÷3=32, 600×4=
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300×5=1500, 840÷4=210, 420×1=420, 96÷3=32, 600×4=2400, 630÷9=70, 99×2=198, 86+7=93, 120÷5=24, 0÷9=0, 700÷7=100, 50×3=150, 80×4=320, 56×3=168, 30÷2=15, 3 8 + 4 8 = 7 8 , 5 7 - 3 7 = 2 7 , 3 5 + 2 5 =1, 9 9 - 6 9 = 1 3 , 3 6 - 3 6 =0, 故答案为:1500,210,420,32,2400,70,198,93,24,0,100,150,320,168,15, 7 8 , 2 7 ,1, 1 3 ,0.
谁能解这个方程:420÷x—2=420÷(x+1) x=?
420÷ x+ 100=600 方程怎么解
12÷(3/4÷1/5) = =
3/()÷2=()/4 ()/5÷()=1/15
-91÷3= -56÷(-14)= 16÷(-3)= (-48)÷(16)= 4/5÷(-1)= -0.25÷3/8=
1+2+3+4÷5=?
1/5×12÷1/5= 0.25×12.5÷1/32= 2/3×4/9×
方程,100-5x=72+2x 4x=420-3x 能简便的简便 1.25×四分之五÷13×32 七又十五分之八-8.8
12÷(3/4÷1/5)=?
(1/32-1/56)÷1/8简算 4/5x-0.4×3=5/3(解方程) 3/5x÷3/4=32
a+b=420,a÷b=37
4分之3×()=8分之5÷()=1
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