Răspuns:
a) 3*(2x+5)+19=82 b)7*(3x-5)+23=114 c)5*(4x+7)-32=63
6x+15+19=82 21x-35=91 20x+35=95
6x=48 21x=126 20x=60
x=8 x=6 x=3
d)51-2*(7x+2)=19 e) 9*(5-3x)+71=89 f) (4x+5):13+36=41
51-14x-4=19 45-27x=18 (4x+5):13=5
51-14x=23 27x=27 4x+5=65
14x=28 x=1 4x=60
x=2 x=15
Explicație pas cu pas:
