Question

If a = -20 and b = -12 find a + (- b)​

Answer 1

a= -20

b= -12

=a+(-b)

=a-b

=-20-(-12)

=-20+12

=-8

Answer 2

If a = -20 and b = -12

so

.'. a+(-b)

= -20 + [-(-12)] minus minus gets plus

= -20+[12]

= -8

So a +(-b)= -8

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