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{72+[52-(122:9-25):22]:22}:11=

Răspuns :

{7²+[5²-(12²:9-2⁵):2²]:2²}:11=
={49+[25-(144:9-32):4]:4}:11
={49+[25-(32-16):4]:4}:11
=[49+(25-16:4):4]:11
=(49+21:4):11
=(49+5,25):11
=54,25:11=4,93(18)