Question

efectuati calculele si scrieti rezultatul sub forma de fractie ordinara

Answer 1

d) ⇒37/8:[(20x4+35x3)/120]+1/8:1/4=
37/8:[(80+105)/120]+1/8·4/1=
37/8:185/120+1/2=
37/8·120/185+1/2= simplificam=
1/2x7/1+1/2=7/2+1/2=8/2=4

f)⇒[6/10+18/31x(7x15-11x6-2x4)/180]:61/50=
[6/10+18/31x31/180]x50/61=
[6/10+1/10)x50/61=
61/10x50/61=5/1=5

h)⇒[(3/5)⁷:(2-7/5)⁴+5:5/4-(3/5)³]:8/5=
[(3/5)⁷:(3/5)⁴+5x4/5-(3/5)³]x5/8=
[(3/5)⁷⁻⁴+4-(3/5)³]x5/8=
[(3/5)³+4-(3/5)³]x5/8=
4x5/8=5/2