Question

please solve these 3 questions with full explanation. if your answer will correct i will give you 5 star rating.
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Answer 1

Answer:

I know the answer of 13 only

Step-by-step explanation:

0.3 =3/10

0.4=4/10

LCM of 10 and 10 =10

3/10=3×1/10×1

4/10=4×1/10×1

3+4/10 =7/10

answer (c)

mark me as branliest