Question

Rezolvati exercitiul 1 mate....

Answer 1

a)3(x-2)+4(3x+1)-5(5-4x)=15x-7
3x-6+12x+4-25-20x=15x-7
3x+12x-20x-15x=-7+25+4-6
-20x=16
x=-16/20

b)---------------
-6x-14-5+10x=8x-4x-8
-6x+10x-8x-4x=-8+5-14
-12x=-17
x=17/12

c)-----------------------
25x-42x+35+9x+9=42-12x+2+4x
25x-42x+9x+12x-4x=2+42-9+35
x=70