(6)1/2(x-1)-1/5(x+2)=1/3x-1(7)3[5x-4(2-x)]-7=5(8)1/3[1/4(1/5x-1)-6]+4=2(9)3/4[4/3(1/2x-1)+8]=3/2x+1
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(6)1/2(x-1)-1/5(x+2)=1/3x-1(7)3[5x-4(2-x)]-7=5(8)1/3[1/4(1/5x-1)-6]+4=2(9)3/4[4/3(1/2x-1)+8]=3/2x+1
(6)1/2(x-1)-1/5(x+2)=1/3x-1
(7)3[5x-4(2-x)]-7=5
(8)1/3[1/4(1/5x-1)-6]+4=2
(9)3/4[4/3(1/2x-1)+8]=3/2x+1
(6)1/2(x-1)-1/5(x+2)=1/3x-1(7)3[5x-4(2-x)]-7=5(8)1/3[1/4(1/5x-1)-6]+4=2(9)3/4[4/3(1/2x-1)+8]=3/2x+1
(6)1/2(x-1)-1/5(x+2)=1/3x-115(x-1)-6(x+2)=10x-3015x-15-6x-12=10x-3015x-6x-10x=-30+15+12-x=-3x=3
(7)3[5x-4(2-x)]-7=53[5x-8+4x]=125x+4x-8=49x=4+89x=12x=4/3
(8)1/3[1/4(1/5x-1)-6]+4=21/4(1/5x-1)-6+12=61/4(1/5x-1)+6=61/4(1/5x-1)=01/5x-1=01/5x=1x=5
(9)3/4[4/3(1/2x-1)+8]=3/2x+1(1/2x-1)+6=3/2x+11/2x-1+6=3/2x+11/2x-3/2x=1+1-6-x=-4x=4
(6): (7): (8) :
(1/2x-1/2)-(1/5x+2/5)=1/3x-1 3[5x-8+4x]-7=5 1/3...
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(6): (7): (8) :
(1/2x-1/2)-(1/5x+2/5)=1/3x-1 3[5x-8+4x]-7=5 1/3[1/20x-1/4-6]+4=2
1/2x-1/2-1/5x-2/5=1/3x-1 15x-24+12x-7=5 1/60x-1/12-2+4=2
3/10x-1/10=1/3x-1 27x=5+24+7 1/60x=2+1/12+2-4
3/10x-1/3x=-1+1/10 x=4/3 1/60x=1/12
-1/30x=-9/10 x=5
x=27
(9):
3/4[4/6x-4/3+8]=3/2x+1
1/2x-1+8=3/2x+1
1/2x-3/2x=1+1-8
-x=-6 亲自在线做的 求最佳~
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