👤

14+{[4+(42:6-3:3):2]-b:b}×6=b+7×7

Răspuns :

14+{[4+( 7-1 ) ÷2]-1}×6=b
14+{[4+6:2]-b:b}x6=b+49
-b:b-b=49-14-4-6x2
b=12