Question

sa se rezolve ecuatiile scriind rezultatele. sub forma de fractie zecimala ×:21=50 b)54:×=20 e)×:1sub2=3sub4f)×sub100:3=4

Answer 1

a)  x:21 = 50   => x = 21*50 = 1050 ;
b)  54:x = 20   => x = 54:20 = 27/10 = 2,7 ;

daca ,,sub" inseamna supra , atunci:

e)  x:1/2 = 3/4 => x = 3/4*1/2=3/8 = 0,375 ;
f)   x/100:3 =4 => x = 4*100*3 = 1200 ;