👤

1+3*[7+8*7-3+3*(5+6)]=

Răspuns :

=1+3(7+56-3+3*11)
=1+3(7+56-3+33)
=1+3(61-3+33)
=1+3(58+33)
=1+3*91
=1+273
=274
1+3(7+8×7-3+3×11) = 1+3(7+56-3+33) = 1+3×93 = 1+279= 280