Question

Aflati x din :
a+a+a = 30
b+b=20
c+c+c+c=24
(2a+ 2b ) : 4 +c = x

Answer 1

3a = 30 ⇒ a=30 :3⇒ a=10
2b=20⇒ b=20:2⇒ b=10
4c=24⇒ c=24:4⇒ c=6

(2*10+2*10) :4 + 6 =x
(20+20) :4+6=x
40:4+6=x
10+6=x
x=16