Question

urgent va rog va rog mult​

Answer 1

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