Answer:
a)9
b)3
c)22
Step-by-step explanation:
(only in 7th so could be wrong)
a
13+7·2
13+14
27
-----------
8-(3+2)
8-3-2
3
----------
27/3
9
------------------------------------------------------------------
b
9+3²
9+9
18
----------
2²+2
4+2
6
--------
18/6
3
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c
(10+2)+(4²-6)
10+2+4²-6
12+16-6
12+10
22
