(m+5,4)+(-7,9-m). m+(1,3-m)

Question

(m+5,4)+(-7,9-m). m+(1,3-m)

Answer 1

=m+5.4-7.9-m=-2.5
=m+1.3-m=1.3

Answer 2

(m+5.4)+(-7.9-m)=m+5.4-7.9-m
m+(1.3-m)=m+1.3-m

Comments

1)-2.5

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2)1.3