Question

JOC Testul balanței Ce aflăm citind balanţele? 1. d+p+a = 20 2. p= d+ a = 10 3. d = a +6 20 10​

Answer 1

Raspuns:

d+p+a=20

p=d+a=10

d=a+6

_________

p=10(d+a)

d+10+a=20

d+a=10

10=10

_________

d=(a+6)

in loc se d scriem a+6

a+6+10+a=20

2a+6=10

2a=4

a=2

_________

d=a+6

d=2+6

d=8

_________

p=d+a

p=8+2

p=10

_________

d+p+a=20

8+10+2=20

Adevărat