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22-05-2018
Mathematics

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7c+5(c-d)-d =

a. 6(2c-d)
b.12c
c.4(3c+d)
d.2(6c-5d)
e.2(6c-d)

Respuesta :

22-05-2018

= 7c + 5(c - d) - d
multiply 5 by parentheses

= 7c + (5*c) + (5*-d) - d
multiply in parentheses

= 7c + 5c - 5d - d
combine like terms

= 12c - 6d
factor out a 6 from both terms

= 6(2c - d)

ANSWER: (A) 6(2c - d)

Hope this helps! :)

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