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5 (2x+3)+17=59 repede va roggggg


Răspuns :

10x +15 +17= 59
10x = 59 -17 -15
10x = 27
x= 27/10
x= 2,7
10x+15+17=59 |-17
10x+15=42 |-15
10x=27 |÷10
x=2,..(adica 2 rest 7)
S={0,1,2,3,4,5,6,7}