Question

calculati. 8/15. - 3/24. b). 1 1/2 + 2 3/3. c) 40/100+ 1/20. d) 6/7. - 3//9. e) 6/8× 4/9. f) 3 /8 ×4/7. g). 6/9 - 3/4 h). 1 1/2 +4 5/6 - 2/12

Answer 1

Răspuns

Explicație pas cu pas:

8/15-3/24=8/15ori24-3/24ori15

=8ori 24/15 -3 ori15 /24

=192/360-45/360

=147/360

11/2+23/3

11ori 3/2+23ori 2/3

33/6+46/6

79/66

40/100+1/2o(amplific fractia a ii a cu 5

40/100+5/100 =45/100 (simplific prin 5) 45:5 =9

100:5 =20 deci 45/100 =9/20

6/7 -3/9 (inmultescprima fractie cu 9 si pe a doua cu 7 0btin

54/63-21/63=33/63(simplific prin 3) obtin 11/21

6/8ori 4/9  =6ori4/8ori9= 24/72(simplific prin24) obtin 1/3