Question

A=-5 b=3 c=4 d=7 e=-9
a) a+b+c+d+e
b)-a+b-c-d+e
c)e-b-c+a+d
d)b-c+d-e-d
e)a-b-c+d+e

Answer 1

a)a+b+c+d+e
=-5+3+4+7+(-9)
=-5+3+4+7-9
=0
b)-a+b-c+d+e
=-(-5)+3-4-7+(-9)
=5+3-4-7-9
=-12
c)e-b-c+a+d
=-9-3-4+(-5)+7
=-9-3-4-5+7
=-14
d)b-c+d-e-d
=3-4+7-(-9)-7
=3-4+7+9-7
=8
e)a-b-c+d+e
=-5-3-4+7+(-9)
=-5-3-4+7-9
=-14