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12x{110-10x[9x8-9x(15-8)]} ajutatima va rog

Răspuns :

12x{110-10x[72-9x7]}=
=12x{110-10x[72-63]}=
=12x{110-10x9}=
=12x{110-90}=
=12x20=
=240
12×{110-10×[9×8-9×(15-8)]}=360
1)15-8=7
2)9×8=81
3)9×7=63
4)81-73=8
5)10×8=80
6)110-80=30
7)12×30=360