Question

Va rog sa ma ajutata-ti dau 15 pcte si o coronita!!!!!!!!1

{6+12:[8-15:(20-a:5)x5]}:2=5

Answer 1

[6+12:(8-15:b*5)]:2=5
(6+12:c):2=5
6+12:c=5*2=10
6+d=10
d=10-6
d=4
--------------------
12:c=4
c=12:4
c=3
--------------------
8-15:b*5=3
8-15:e=3
8-f=3
f=8-3
f=5
--------------------
15:e=5
e=15:5
e=3
--------------------
b*5=3
b=5*3
b=15
--------------------
20-a:5=15
20-r=15
r=20-15
r=5
--------------------
a:5=5
a=5:5
a=1
RASPUNS: a=1