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Theqsofro
a fost răspuns

Aflati x din:
(12+x)+14=4*x-4
si
(3*x+2):4-2=3

Răspuns :

Gandac

(3X+2)÷4-2=3 | +2
(3X+2)÷4=5 |×4
3X+2=20 | -2
3X=18
X=18÷3
X=6
(3×6+2)÷4-2=3
(18+2)÷4-2=3
20÷4-2=3
5-2=3

(12+X)+14=4X-4 |-14
12+X=4X-4-14
12+4+14=4X-X
30=3X
X=30÷3
X=10
(12+10)+14=4×10-4
22+14=40-4
36=36

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