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1.2x=9.6列方程

1.2x-3.27=9.6 解: 1.2x=6.33 x=5.275

X=4.2

3x-7×(x+1.2)=9.6 解:3x-7x-8.4=9.6 -4x-8.4=9.6 4x=-8.4-9.6 4x=-18 x=-18÷4 x=-4.5

(1)30x=9.6, 30x÷30=9.6÷30, x=0.32;(2)3x- 3 8 =11.625, 3x- 3 8 + 3 8 =11.625 + 3 8 , 3x÷3=12÷3, x=4;(3)3x-1.2x=36,1.8x=36, 1.8x÷1.8=36÷1.8, x=20.

(7.9+2.1)x÷1.2=0.6 解:10x=0.6*1.2 10x=0.72 x=0.072

(1)6x+1.2×4=9.6,6x+4.8=9.6, 6x+4.8-4.8=9.6-4.8, 6x=4.8, 6x÷6=4.6÷6, x=0.8;(2)8x-x=12+2.7, 7x=14.7, 7x÷7=14.7÷7, x=2.1;(3)5×(x+2.5)=35, 5x+12.5=35, 5x+12.5-12.5=35-12.5, 5x=22.5, 5x÷5=22.5÷5, x=4.5.

2.6x+9=35 2.6x=26 x=10 4x-1.2=3.6 4x=4.8 x=1.2 2.1x+1.8=35.4 2.1x=33.6 x=16

35x十13x=9.6 48x=9.6 x=0.2 希望可以帮到你,O(∩_∩)O谢谢!

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