解方程:6.9x=23.12 6(x+2)=72 6.8x+2.3×=30.02 (9-4.5)x=4.5 6.8x+2.3×3=30.02 x÷(6.3-2.3)=1.16.8x+6.9x=27.4 1.8(x+0.2)=7.2 3x-4×6=48 6x+7x=26 x+3.5×3=18

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解方程:6.9x=23.126(x+2)=726.8x+2.3×=30.02(9-4.5)x=4.56.8x+2.3×3=30.02x÷(6.3-2.3)=1.16.8x+6.9x=27.41.8(x

解方程:6.9x=23.12 6(x+2)=72 6.8x+2.3×=30.02 (9-4.5)x=4.5 6.8x+2.3×3=30.02 x÷(6.3-2.3)=1.16.8x+6.9x=27.4 1.8(x+0.2)=7.2 3x-4×6=48 6x+7x=26 x+3.5×3=18
解方程:6.9x=23.12 6(x+2)=72 6.8x+2.3×=30.02 (9-4.5)x=4.5 6.8x+2.3×3=30.02 x÷(6.3-2.3)=1.1
6.8x+6.9x=27.4 1.8(x+0.2)=7.2 3x-4×6=48 6x+7x=26 x+3.5×3=18

解方程:6.9x=23.12 6(x+2)=72 6.8x+2.3×=30.02 (9-4.5)x=4.5 6.8x+2.3×3=30.02 x÷(6.3-2.3)=1.16.8x+6.9x=27.4 1.8(x+0.2)=7.2 3x-4×6=48 6x+7x=26 x+3.5×3=18
6.8x+6.9x=27.4 13.7X=27.4 X=2
1.8(x+0.2)=7.2 X+0.2=4 X=3.8
3x-4×6=48 3X-24=48 3X=72 X=24
6x+7x=26 13X=26 X=2
x+3.5×3=18 X+10.5=18 X=7.5

X=7.5

6.8x+6.9x=27.4
13.7x=27.4
x=2
1.8(x+0.2)=7.2
1.8x+0.36=7.2
1.8x=6.84
x=3.8
3x-4×6=48
3x-24=48

全部展开

6.8x+6.9x=27.4
13.7x=27.4
x=2
1.8(x+0.2)=7.2
1.8x+0.36=7.2
1.8x=6.84
x=3.8
3x-4×6=48
3x-24=48
3x=72
x=24
6x+7x=26
13x=26
x=2
x+3.5×3=18
x+10.5=18
x=7.5

收起

6.93x=23.126+3x=726.8x+2.3x=30.02+5.5x=4.5+6.