Question

Rezolvati ecuatile :
a) {[(x-1) ori 2] : 3} : 4 =5
b) 1+{2 ori [3+(4+x) : 5] -6} -7=8
c) 2x+1=x+5
d) 3(x-5)+8=20 

Answer 1

a) {[(x-1)x2]:3}=5x4=20
[(x-1)x2]=20x3=60
x-1=60:2=30
x=30+1
x=31