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15+5×{5+5:[45:5-(36:x+)]+6×0}=65

Răspuns :

5 x{5+5:[45:5-(36:X )]+6x0}=65-15=50
{5+5:[45:5-(36:X)]+6 x 0}=50:5=10
5:[45:5-(36:X)]+0=10-5=5
[45:5-(36:X)]=5:5=1
45:5-(36:X)=1
9-(36:X)=1
36:X=9-1=8
X=36:8=4.5