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18. Remove the parentheses from the following expression, and combine like terms: (a + b – c) + 3a – 2c

A. 4a + b + 3c
B. 4a + b – 3c
C. 2a – b – c
D. 2a – b + c

Respuesta :

Combine (or subtract) like terms.

a + b – c + 3a – 2c

4a + b – 3c <-------------------Answer

So, Choice B.

carlosego

For this case we have the following expression:

[tex](a + b + c) + 3a-2c[/tex]

We eliminate parentheses:

[tex]a + b-c + 3a-2c =[/tex]

We add similar terms:

[tex]a + 3a + b-c-2c =[/tex]

We have that equal signs are added and the same sign is placed, while different signs are subtracted and the sign of the major is placed, then:

[tex]4a + b-3c[/tex]

Answer:

[tex]4a + b-3c[/tex]

Option B