Question

axb=90
b=cx3
c=d:10
d-e=250
e:10=5

Answer 1

e=5x10=50
d=250+50=300
c=300/10=30
b=30x3=90
a=90/90=1

Answer 2

e:10=5 => x =50
d -e =250 d-50=250 =>d=300
c =d:10 C =300:10 => c =30
b =c ori 3 b = 30 ori 3 => b=90
a ori b =90 a ori 90=90 => a= 1