Answer:
The correct option is 4.
Step-by-step explanation:
The given expression is
[tex](-7a-19c)-(-12a+30c)-(-21a-11c)[/tex]
Using distributive property we get
[tex]-7a-19c-(-12a)-(30c)-(-21a)-(-11c)[/tex]
[tex]-7a-19c+12a-30c+21a+11c[/tex]
Combine like terms.
[tex](-7a+12a+21a)+(-19c-30c+11c)[/tex]
On simplification we get
[tex](26a)+(-38c)[/tex]
[tex]26a-38c[/tex]
The simplified form of given expression is 26a-38c. Therefore the correct option is 4.
