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3(2x+1)=2(1-2x)
6x+3=2-4x
6x+4x=2-3
10x=-1 / :10
x= -0,1
b)
2(0,4x-1) = 3(2x-5)
0,8x-2=6x-10
0,8x-6x=-10+2
-5,2x=-8 /:(-5,2)
x=1 i 7/15