a)7x+4+2(x-5)=8(x+1) - desfacem parantezele.
7x+4+2x-10=8x+8 - separam termenii asemenea
7x+2x-8x=8-4+10 - reduci termenii asemenea
x=14
b) 2(x+3-5(2x+1)=12x-19 - pasii sunt la fel ca cei de sus,nu o sa ii mai scriu.
2(x+3-10x-5)=12x-19
2x+6-20x-10=12x-19
2x-20x-12x=-19-6+10
-30x=-15
x=1/2
