0,2(х-3)-1=0,5(х+3)-0,4 -5(z-7)=30-(2z+1)
-2(x+5)+3=2-3(x+1)
3(2x-1)+6x=10x-7
4n-3(n+7)=2n-2(n-1)
решите что можете.
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