解方程:4(x+0.3)=4.8 3*0.7+4x=6.5 5.5x-1.3x=12.6

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解方程:4(x+0.3)=4.8 3*0.7+4x=6.5 5.5x-1.3x=12.6
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解方程:4(x+0.3)=4.8 3*0.7+4x=6.5 5.5x-1.3x=12.6
解方程:4(x+0.3)=4.8 3*0.7+4x=6.5 5.5x-1.3x=12.6

解方程:4(x+0.3)=4.8 3*0.7+4x=6.5 5.5x-1.3x=12.6
4(x+0.3)=4.8
x+0.3=1.2
x=1.2-0.3
x=0.9
3*0.7+4x=6.5
2.1+4x=6.5
4x=6.5-2.1
4x=4.4
x=1.1
5.5x-1.3x=12.6
4.2x=12.6
x=3

4(x+0.3)=4.8
x+0.3=1.2
x=1.2-0.3
x=0.9
3*0.7+4x=6.5
2.1+4x=6.5
4x=6.5-2.1
4x=4.4
x=1.1
5.5x-1.3x=12.6
4.2x=12.6
x=3