Question

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

−16a − 60c
2a + 22c
26a + 38c
26a − 38c

Answer 1

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

26a -38c

Answer 2

The correct option is 4.

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.