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Determina pe x din egalitatea:[(x-2)x3-4]:5=4

Răspuns :

[(x-2)x3-4]:5=4
(x-2)x3-4=4x5
(x-2)x3-4=20
(x-2)x3=20+4
(x-2)x3=24
x-2=24:3
x-2=8
x=8+2
x=10
[(x-2) x 3-4]:5=4
[(x-2) x 3-4]=4 x 5
[(x-2) x 3-4]=20
(x-2) x 3=20+4
(x-2) x 3=24
x-2=24:3
x-2=8
x=8+2
x= 10

daca nu intelegi ma intrebi