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3.(2x-1)=141
29-5.(x+1)=4


Răspuns :

1)3*(2x-1)=141
6x-3=141
6x=141+3
6x=144
x=144:6=24
2)29-5*(x+1)=4
29-5x-5=4
5x=29-5-4
5x=20
x=20:5=4