Question

Subtract :-
- 3a
- 7 a
-------​

Answer 1

Answer:

-10a

Step-by-step explanation:

-3a

-7a

just add them and put minus sign

-(3+7)

-10

Answer 2

Answer:

- 10a

Step-by-step explanation:

- 3a - 7a

= - 10a

( These sums are easy only, you can do it own your own. Study maths with interest, it is not a tough subject. If, you study with interest, you can solve any sum in maths. You daily solve maths, first study the maths book given by your school throughly and then, solve extra sums. If you can, you can. Study, maths with interest and you can solve any sum on your own, without anybody's help. )