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Darya [45]
3 years ago
5

Simplify: (−7a − 19c) − (−12a + 30c) − (−21a − 11c)

Mathematics
2 answers:
lawyer [7]3 years ago
4 0
-7a -19c
12a -30c
21a +11c

26a -38c
Alexeev081 [22]3 years ago
3 0

Answer:

The correct option is 4.

Step-by-step explanation:

The given expression is

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

Using distributive property we get

-7a-19c-(-12a)-(30c)-(-21a)-(-11c)

-7a-19c+12a-30c+21a+11c

Combine like terms.

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

On simplification we get

(26a)+(-38c)

26a-38c

The simplified form of given expression is 26a-38c. Therefore the correct option is 4.

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