解方程:(一定要有过程和答案,)①y- [(y-1)/2 ]=2- [(y+3)/5 ]②(x/5)- [(3-2x)/2 ]=x③ [(2y+1)/4 ]+[(10y+1)/ 6 ]=1- [(1-2y)/3 ]④ [(x-2)/5 ] -[(x+3)/10 ]-[ (2x-5)/3 ]+3=0

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解方程:(一定要有过程和答案,)①y- [(y-1)/2 ]=2- [(y+3)/5 ]②(x/5)- [(3-2x)/2 ]=x③ [(2y+1)/4 ]+[(10y+1)/ 6 ]=1- [(1-2y)/3 ]④ [(x-2)/5 ] -[(x+3)/10 ]-[ (2x-5)/3 ]+3=0
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解方程:(一定要有过程和答案,)①y- [(y-1)/2 ]=2- [(y+3)/5 ]②(x/5)- [(3-2x)/2 ]=x③ [(2y+1)/4 ]+[(10y+1)/ 6 ]=1- [(1-2y)/3 ]④ [(x-2)/5 ] -[(x+3)/10 ]-[ (2x-5)/3 ]+3=0
解方程:(一定要有过程和答案,)
①y- [(y-1)/2 ]=2- [(y+3)/5 ]
②(x/5)- [(3-2x)/2 ]=x
③ [(2y+1)/4 ]+[(10y+1)/ 6 ]=1- [(1-2y)/3 ]
④ [(x-2)/5 ] -[(x+3)/10 ]-[ (2x-5)/3 ]+3=0

解方程:(一定要有过程和答案,)①y- [(y-1)/2 ]=2- [(y+3)/5 ]②(x/5)- [(3-2x)/2 ]=x③ [(2y+1)/4 ]+[(10y+1)/ 6 ]=1- [(1-2y)/3 ]④ [(x-2)/5 ] -[(x+3)/10 ]-[ (2x-5)/3 ]+3=0
①y- [(y-1)/2 ]=2- [(y+3)/5 ]
去分母得
10y-5(y-1)=20-2(y+3)
去括号得
10y-5y+5=20-2y-6
移项、合并同类项得
7y=9
系数化成1得
y=9/7
②(x/5)- [(3-2x)/2 ]=x
去分母得
2x-5(3-2x)=10x
去括号得
2x-15+10x=10x
移项、合并同类项得
2x=15
系数化成1得
x=7.5
③ [(2y+1)/4 ]+[(10y+1)/ 6 ]=1- [(1-2y)/3 ]
去分母得
3(2y+1)+2(10y+1)=12-4(1-2y)
去括号得
6y+3+20y+2=12-4+8y
移项、合并同类项得
18y=3
系数化成1得
y=1/6
④ [(x-2)/5 ] -[(x+3)/10 ]-[ (2x-5)/3 ]+3=0
去分母得
6(x-2)-3(x+3)-10(2x-5)+90=0
去括号得
6x-12-3x-9-20x+50+90=0
移项、合并同类项得
-17x=-119
系数化成1得
x=7