Question

vă rog cât mai repede posibil !!! Dau coroană !​

Answer 1

Răspuns:

Ma=(7+11+36)/3

Ma=18

_____

Ma=(¹⁸⁾3/8+¹²⁾5/12+⁹⁾41/16+¹⁶⁾5/9)/4

Ma=(54/144+60/144+369/144+80/144)/4

Ma=(563/144)/4

Ma=563/144·1/4

Ma=563/576

________

Ma=(⁵⁾7/2+²⁾4/5+¹⁰⁾5)/3

Ma=(35/10+8/10+50/10)/3

Ma=93/10·1/3

Ma=93/30=31/10

____________

(a+40)/2=30

a+40=30·2

a=60-40

a=20