Answer:

1.8+(6+5)

8+11

=19

2.(10+7)+6

17+6

=23

3.(13+12)+9

25+9

=34

4.21+(17+10)

21+27

=48

5.25+(3+8)

25+11

=36

SANA MAKATULONG

Step-by-step explanation:

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