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(x-12,7•4+2)•4+2,356=3,556

Răspuns :

(x-12,7•4+2)•4+2,356=3,556
(x-50,8+2)•4=3,556-2,356
(x-48,8)
•4=1,2
x-48,8=1,2:4
x-48,8=0,3
x=48,8+0,3
x=49,1