Question

va rog ajutatima dau coroana si ma abonez

Answer 1

$\dfrac{1}{4}dinB=10=) \dfrac{4}{4}dinB=10*4=40$
b=40
a=10*2=20

40+20-20*3=60-60=0

Answer 2

a/2=b/4=10
=)a=20
b=40
a+b-3a=20+40-3×20=20+40-60=60-60=0