emily9672 emily9672
  • 13-12-2019
  • Mathematics
contestada

6.
-20 + -2m
Can u help me

Respuesta :

princejad princejad
  • 13-12-2019

Answer

Step-by-step explanation:

Replace all occurrences of

+

−

with a single

−

. A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because

1

⋅

−

1

=

−

1

−

20

−

2

m

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