Question

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

Answer 1

Răspuns:

a*b=90=>a·90=90=>a=90:90=>a=1

b=c·3=>b=30·3=>b=90

c=d:10=>c=300:10=>c=30

d-e=250=>d-50=250=>d=250+50=>d=300

e:10=5=>e=5·10=>e=50

Answer 2

e:10=5

e=5×10

e=50

d-50=250

d=250+50

d=300

c=300:10

c=30

b=30×3

b=90

a×90=90

a=90:90

a=1