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(x+5 ) + ( x - 4 ) = 11
x = ?


Răspuns :

Kisen
x+5 + x -4 = 11
2x +1 = 11
2x = 10
x = 5
Spidie
(x+5)+(x-4)=11
x+5+x-4=11
2x+1=11
2x=11-1
2x=10
x=10:2
x=5