Răspuns:
a) {[(45x5+175)x2-300]x15-75x4}x4-6795=
={[(225+175)x2-300]x15-300}x4-6795=
=[(400x2-300)x15-300]x4-6795=
=[(800-300)x15-300]x4-6795=
=(500x15-300)x4-6795=
=(7500-300)x4-6795=
=7200x4-6795=
=28800-6795=
=22005
b) 5x{25x8-[221-(56x4-213)x11]x2}+597=
=5x{200-[221-(224-213)x11]x2}+597=
=5x[200-(221-11x11)x2]+597=
=5x[200-(221-121)x2]+597=
=5x(200-100x2)+597=
=5x(200-200)+597=
=5x0+597=
=0+597=
=597
Explicație pas cu pas:
