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Mariusraducan7
a fost răspuns

Stiind ca:
a=(9+8:2-9:3):2
b=7-15:(8-6:2)
c=(8+16):3+3x(18-4x3)
calculeaza: 5 x A+ 3 x b - c=
8 x a + 6 x b - 2 x c=

Răspuns :

Esmeralda2004
a=(9+4-3):2
(13-3):2=
10:2=5
b=7-15:(8-3)
7-15:5=
7-3=4
c=24:3+3×(18-4×3)
24:3+3×(18-12) =
24:3+3×6=
8+18=26
5×5+3×4-26=
15+12-26=
27-26=1
8×5+6×4-2×26=
40+24-52=
64-52=12