Răspuns:
Explicație pas cu pas:
a) x/12 = 1/12 x=1
b)-1/5 = x/75 x= -75/5 x=-15
c) 75/100 +27/4 = 3/4+27/4 = 15/2
3(x+1) = 8*15/2=6 x+1 = 20 x=19
d)2/10+2/9=1/5+2/9=14/45
14/(45(2x+1)=1/15 2x+1=14 x=13/2
e) 2^49(4-2-1) = 2^49
2^49/8^16 = 2^49/2^48 =2
2*992 =31x |:31 2*32 = x x=64
f) x^2 = 8*18 = 144 x=12
