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(x+140)-4x5=120
x=?
Dau coronița ! :)))

Răspuns :

(x+140)-4x5=120
(x+140)-20=120
x+140=120+20
x+140=140
x=140-140
⇒x=0


Sper ca te-am ajutat ! :)
Cocirmariadenis
(x+140)-4x5=120
(x+140)-20=120
x+140=120+20
x+140=140
x=140-140
x=0

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