3x-[1-(2+3x)]=7 1/2(x+2)=1-1/3(x-5) 1/2(x-3)=2-1/2(x-3)解方程
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![3x-[1-(2+3x)]=7 1/2(x+2)=1-1/3(x-5) 1/2(x-3)=2-1/2(x-3)解方程](/uploads/image/z/178744-40-4.jpg?t=3x-%5B1-%282%2B3x%29%5D%3D7+1%2F2%28x%2B2%29%3D1-1%2F3%28x-5%29+1%2F2%28x-3%29%3D2-1%2F2%28x-3%29%E8%A7%A3%E6%96%B9%E7%A8%8B)
3x-[1-(2+3x)]=7 1/2(x+2)=1-1/3(x-5) 1/2(x-3)=2-1/2(x-3)解方程
3x-[1-(2+3x)]=7 1/2(x+2)=1-1/3(x-5) 1/2(x-3)=2-1/2(x-3)解方程
3x-[1-(2+3x)]=7 1/2(x+2)=1-1/3(x-5) 1/2(x-3)=2-1/2(x-3)解方程
3x-[1-(2+3x)]=7
3x-1+2+3x=7
3x+3x=7-2+1
6x=6
x=6÷6
x=1
1/2(x+2)=1-1/3(x-5)
两边乘6
3x+3=6-2x+10
3x+2x=6+10-3
5x=13
x=13÷5
x=13/5
1/2(x-3)=2-1/2(x-3)
1/2(x-3)+1/2(x-3)=2
x-3=2
x=3+2
x=5