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5400-50×{84-[45-(7×x-9)×2]}=2250

Răspuns :

73x{1100-10x[19x8-9x(15-8)]}=15 330
=73x[1100-10x(152-9x7)]=
=73x[1100-10x(152-63)]=
=73x(1100-10x89)=
=73x(1100-890)=
=73x210=
=15330
5400-50•[84-(45-2•7•x+9•2)]=2250
5400-50•[84-(45-14×+18)=2250
5400-50•(84-63-14×)=2250
5400-50•21-14×=2250