kaitlynnokay kaitlynnokay

17-02-2017
Mathematics

contestada

simplify: (-7a - 19c) - (-12a + 30c) - (-21a - 11c)

A. -16a - 60c

B. 2a + 22c

C. 26a + 38c

D. 26a - 38c

Respuesta :

Reennaa Reennaa

17-02-2017

It is D hope that helps

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deadlykittenxo deadlykittenxo

17-02-2017

(-7a - 19c) - (-12a + 30c) - (-21a - 11c)
Rewrite with understood 1's:
1(-7a - 19c) - 1(-12a + 30c) - 1(-21a - 11c)
Distribute 1's to the terms:
-7a - 19c + 12a - 30c + 21a + 11c
Combine like terms.
26a - 38c

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