Question

calculeaza in doua moduri (28-8):4=
(14+35):7=
(40+16):8=
(30-18):6=
(63-27):9=
(15+9+6):3=
(16-8+4):2=

Answer 1

28:4-8:4=7-2=5 si (28-8):4=20:4=5
14:7+35:7=2+5=7 si (14+35):7=49:7=7
40:8+16:8=5+2=7 si (40+16):8=7
30:6-18:6=5-3=2 si (30-18):6=12:6=2
63:9-27:9=7-3=4 si (63-27):9=36:9=4
15:3+9:3+6:3=5+3+2=10 si (15+9+6):3=30:3=10
16:2-8:2+4:2=8-4+2=6 si (16-8+4):2=12:2=6

Answer 2

(28-8):4=20:4=5 (primul mod)
(28-8):4=28:4-8:4=7-2=5 (al doilea mod)
(14+35):7=49:7=7 (primul mod)
(14+35):7=14:7+35:7=2+5=7 (al doilea mod)
(40+16):8=56:8=7 (primul mod)
(40+16):8=40:8+16:8=5+2=7 (al doilea mod)
(30-18):6=12:6=2 (primul mod)
(30-18):6=30:6-18:6=5-3=2 (al doilea mod)
(63-27):9=36:9=4 (primul mod)
(63-27):9=63:9-27:9=7-3=4 (al doilea mod)
(15+9+6):3=30:3=10 (primul mod)
(15+9+6):3=15:3+9:3+6:3=5+3+2=10(al doilea mod)
(16-8+4):2=12:2=6(primul mod)
(16-8+4):2=16:2-8:2+4:2=8-4+2=4+2=6 (al doilea mod)

[La primul mod intai rezolvi paranteza, iar la al doilea ori fiecare termen din paranteza si il imparti]