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2.25÷7.5x(3.2÷2.5)脱式计算简便

2.28÷7.5×(3.2÷2.5) =0.6×3.2÷2.5 =1.92÷2.5 =0.768 你好,本题已解答,如果满意 请点右下角“采纳答案”。

1。 7.5X(3/5)+2.5除以(5/3) =7.5X(3/5)+2.5X(3/5) =(7.5+2.5)X(3/5) =10X(3/5) =6. 2。 (2/9)除以[(5/6)X(4/5-2/3)] 解: 因为 [(5/6)X(4/5-2/3)]除以(2/9) =[(5/6)X(4/5-2/3)]X(9/2) =(9/2)X(5/6)X(4/5)-(9/2)X(5/6)X(2/3) =3-5/2 =1/2 所以 (...

7.5÷x=2.5÷12 7.5÷x=2.5/12 x=7.5÷2.5/12 x=7.5*12/2.5=3*12=36

2.5÷x=7.5 x=2.5÷7.5 =1/3

x÷2.5+7.5=10怎么解 解:x÷2.5+7.5=10 x÷2.5=10-7.5 x=2.5*2.5 x=6.25

x÷2.5+7.5=10 x➗2.5=10-7.5 x➗2.5=2.5 x=2.5x2.5 x=6.25

7.5-2.4x(5/4)x(5/2) =7.5-(12/5)x(5/4)x(5/2) =7.5-3x(5/2) =0

(1)7.5+2.8x=18.7 7.5+2.8x-7.5=18.7-7.5 2.8x=11.2 2.8x÷2.8=11.2÷2.8 x=4;(2)3.6x-3.6=3.63.6x-3.6+3.6=3.6+3.6 3.6x=7.2 3.6x÷3.6=7.2÷3.6 x=2;(3)12.8-4x=6 12.8-4x+4x=6+4x 6+4x=12.8 6+4x-6=12.8-6 4x=6.8 4x÷4=6.8÷4 x=1.7;(4...

(4.8×7.5×8.1)÷(2.4×2.5×2.7) =(4.8÷2.4)×(7.5÷2.5)×(8.1÷2.7) =2×3×3 =18

(4.8×7.5×8.1)÷(2.4×2.5×2.7) =(4.8÷2.4)x(7.5÷2.5)x(8.1÷2.7) =2x3x3 =18

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