Question

va rog am nevoie chiar acum dau coroana corecte

Answer 1

4.
=[100-3(247-216)]{1+2[3+4(5+42)]}
=(100-3×31)[1+2(3+4×47)]
=7(1+2×(3+188))
=7(1+2×191)
=7×383
=2681
5.
=2483-23(15+5×8)+32(178-5×17)
=2483-23(15+40)+32(178-85)
=2482-23×55+32×93
=2483-1265+2976
=4194