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(x-4.5)÷7=1.6 (x+32)÷24=2.5 (x+8.6)÷2.4=...

1、(x-4.5)÷7=1.6 x-4.5=1.6*7 x=1.6*7+4.5=15.7 2、(x+32)÷24=2.5 x+32=2.5*24 x=2.5*24-32=28 3、(x+8.6)÷2.4=64 x+8.6=64*2.4 x=64*2.4-8.6=145 4、 1.5(48-2x)=48 3(24-x)=48 24-x=16 x=24-16=8 5、 4.8÷1.2+0.5x=8.5 4+0.5x=8....

(1)3.6x-2.7x=270, 0.9x=270, 0.9x÷0.9=270÷0.9, x=300;(2)4+2x=8.4, 4+2x-4=8.4-4, 2x÷2=4.4÷2, x=2.2;(3)4x-32=8.8, 4x-32+32=8.8+32, 4x÷4=40.8÷4, x=10.2;(4)3.6x+0.8x=8.8, 4.4x=270, 4.4x÷4.4=8.8÷4.4, x=2;(5)...

(1)x-4.8=19.32 x-4.8+4.8=19.32+4.8 x=24.12;(2)4.34+x=6.274.34+x-4.34=6.27-4.34 x=1.93;(3)6.5-x=3.5 6.5-x+x=3.5+x 6.5-3.5=3.5+x-3.5 x=3;(4)4.8÷x=1.2 4.8÷x×x=1.2×x 4.8÷1.2=1.2x÷1.2 x=4;(5)3.6x=2.883.6x÷3.6=2.88÷3.6 ...

(2.4ⅹ1.8x4)÷(3.6x1.2x0.5) =(2.4÷1.2)×(1.8÷3.6)×(4÷0.5) =2×0.5×8 =8 (1/69+2/71)Ⅹ23+25÷71 =1/69×23+2/71×23+25/71 =1/3+46/71+25/71 =1/3+(46/71+25/71) =1/3+1 =1又1/3

÷0.4 +0.15)= 20x(1.6 +0.15) = 20 x...24÷2.4-2.5×0.8 =10 -2=8405×(3213-3189)...5.38+7.85-5.37= 13.23 - 5.37=7.867.2...

7/4Ⅹⅹ4=9.6 7x=9.6 x=9.6÷7 x=48/35

(1)60%x+14=32.6, 0.6x+14-14=32.6-14, 0.6x=18.6, 0.6x÷0.6=18.6÷0.6, x=31,(2)4.8x÷2=1.2, 2.4x=1.2, 2.4x÷2.4=1.2÷2.4, x=0.5,(3)89+19x=2, 89+19x-89=2-89, 19x=109, 19x×9=109×9, x=10,(4)(3+x)×0.4=30×425,(3+x...

32.8+19=51.8, 5.2÷1.3=4, 1.6×0.4= ...24÷2.4-2.5×0.8 (4121+2389)÷7 671×15-...x+9x=4+7 2x+9=17 8-4x=6 6x-7=12 7x-9...

0.8×[(10-6.76)÷1.2] = 0.8 x(3.24...24÷2.4-2.5×0.8 =10 -2=8405×(3213-3189)...0.68×1.9+0.32×1.9 = (0.68 ...展开...

75.6÷x=12.6 5x+12.5=32.35(x+8)=102 ...4.5x-x=28 X-5.7=2.15 15 5X-2X=18 3X+0...9、一个数乘0.75等于6个2.4相加的和,这个数是多少...

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