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5(x-7)-3(x-3)+17=11 va rog


Răspuns :

5x-35-3x+9+17=11
2x-26+17=11
2x-9=11
2x=20
x=20:2
x=10
5(x-7)-3(x-3)+17=11
5x-35-3x+9+17=11
2x=11+35-9-17
2x=20
x=10