Rozwiążcie mi te równania na teraz z kolejnymi etapami a)2(5a-3)-a-4(3a-2)=0 b)2b-(1-b)=11-b c)0.4(x-2)=x+4 d)3y-2(y-1)=-6 e)3(3-5y)=90-5(3y-2)
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a)2(5a-3)-a-4(3a-2)=0
10a-6-a-12a+8=0
-3a=-2
a=2/3
b)2b-(1-b)=11-b
2b-1+b=11-b
3b+b=11+1
4b=12
b=3
c)0.4(x-2)=x+4
0,4x-0,8=x+4
0,4x-x=4+0,8
-0,6x=4,8
x=-8
d)3y-2(y-1)=-6
3y-2y+2=-6
y=-8
e)3(3-5y)=90-5(3y-2)
9-15y=90-15y+10
-15y+15y=100-9
0=99
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