Question

Daca a+2 supra 2 = 7 supra 3 calculati:
a) a supra 2
b) a+9 supra 5
c) 7 supra a+2
dau coroana rapid va rog !!

Answer 1

a+2 7

___ = _

2 3

3a+6=14

3a=8

a=8/3

a) 8/3/2=8/3×1/2=8/6=4/3

b) 8/3+9 /5=8+27/3 /5 = 35/3/5= 35/3×1/5=35/15=7/3

c) 7/(8/3+2)=7/(8+6/3)=7/14/3=7×3/14=21/14=3/2