Question

va rog ajutati-ma :(Calculati si scrieti rezultatul in forma de fractie ordinara: a) 2,52 * 0,(3);b) 5/7 * 2,8; c) 5/9 * 7,2; d) 4,(3) + 4,(2); e) 9/38 * 4,(2);f) 1,2(1) * 100/90.

Answer 1

a) 252/100*3/9= 28/100*3/1= 7/25*3/1= 21/25
b) 5/7*28/10 = 1/7*28/2 = 1/1*4/2= 4/2= 2/1= 2
c) 5/59*72/10= 5/1*8/10= 1/1*8/2= 8/2= 4/1= 4
d)4,(3)+4,(2)= 43/9+42/9= 85/9
e) 9/38*42/9= 42/38= 21/19
f) 121/90*100/90= 121/9
gata