Question

Ex 31 doar punctele a,b, c, d

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Answer 1

Răspuns:

Explicație pas cu pas:

a)(3a/b+5)/(4a/b+1)=(3×5/4+5)/(4×5/4+1)=[(15+20)/4]/(5+1)=35/24

b)(9×a/b-2)/(5×a/b+3)=(9×5/4-2)/(5×5/4+3)=(45-8)/(25+12)=37/37=1

c)(11×a/b-9)/(2×a/b+4)=(11×5/4-9)/(2×5/4+4)=(55-36)/(10+16)=19/26

d) (6×5/4-2)/(4×5/4+3)=(30-8)/(20+12)=22/32=11/16