3 years ago

Help me please i will give brainliest

Mathematics

1 answer:

AlekseyPX3 years ago

8 0

Answer:

Step-by-step explanation:

Number 13:

a+b=3+4

= 7

Number 14:

c-a= 12-3

= 9

Number 15:

a+b+c= 3+4+12

= 19

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