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4.8除括号,2.7乘2.4.

括号4.8×7.5×8等于1括号除以括号2.4×2.5×2.7括号递等式计算 括号4.8×7.5×8等于1括号除以括号2.4×2.5×2.7括号 =(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×(4.8-2.4)除以5 =4.5×2.2除以5 =9.9除以5 =1.98

原式 =(2.7+4.8)÷(1.2x2.5) =7.5÷(1.2x2.5) =7.5÷1.2÷2.5 =7.5÷2.5÷1.2 =3÷1.2 =2.5 供参考。

2.5×括号7-4.8括号乘四 =2.5x(7-4.8)x4 =10x2.2 =22

(4.8+3.6)÷(4.8-3.6) =(1.2×4+1.2×3)÷(1.2×4-1.2×3) =(4+3)÷(4-3)×(1.2÷1.2) =7

[﹙5.2+4.8+4﹚×48]×3/2=14×3/2+48×3/2=21+72=93

0.8×2/11+4.8×(-2/7)-2.2÷7/2+0.8×9/11 =0.8×(2/11+9/11)-(4.8+2.2)×2/7 =0.8×1-7×2/7 =0.8-2 =-1.2

4.8×2.3+2.3×5.2 =(4.8+5.2)×2.3 =10×2.3 =23

(1/2-1/3+1/4)×4.8 =1/2x4.8-1/3x4.8+1/4x4.8 =2.4-1.6+1.2 =2

括号7/24+12分之1-5/16括号乘以4.8 =7/24 ×4.8+12分之1 ×4.8-5/16×4.8 =1.4+0.4-1.5 =1.8-1.5 =0.3

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