1/3[1/4(x-2)+3]=7 求x
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1/3[1/4(x-2)+3]=7 求x
1/3[1/4(x-2)+3]=7 求x
1/3[1/4(x-2)+3]=7 求x
1/3[1/4(x-2)+3]=7
两边乘3
1/4(x-2)+3=21
1/4(x-2)=18
两边乘4
x-2=72
x=72+2
x=74
1/3[1/4(x-2)+3]=7 两边乘12
x-2+12=84
x=84+2-12
x=74
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