Răspuns :

Adrianastoica59id

a = (9 +8:2-9:3): 2

a=5

b = 7 - 15: (8-6: 2)

b=4

c = (8 + 16): 3 + 3 (18 - 4x 3).

c=26

5 x a + 3 x b-c=

=5 x 5 + 4 x 3 - 26

=11

8 x a + 6 x b- 2 x c=

=8 x 5 + 6 x 4 - 2 x 26=

=12

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