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4(x+3)+2(2x-2)=5x+14
sa se afle x
x nr nat


Răspuns :

4(x+3)+2(2x-2)=5x+14
4x+12+4x-4=5x+14
8x+8=5x+14
3x=6
x=2
x∈N=>S=2
4( x + 3) + 2(2x - 2) = 5 x+ 14
4x + 12 + 4x - 4 = 5x + 14
4x + 4x - 5x = 14 - 12 + 4
3x = 6
x = 6 / 3
x = 2