rezolvati in Q ecuatiile: 1) 5 ori [(2x+3)-2(x+1]=[4 ori 5(x-1)-2(4-2x)]+23
2) 4 ori [9-5(x-2)]+3(3x-5)=2 ori[3(x-5)+17]-4
3)[3(x+5)+2 ori (2x+1/2)]:7=1