Упростите вырожения

1)3в-(5а-7в)=

2)5х+(11-7х)=

3)-3q-(8р-3q)=

4)-(8с-4)+4=

5)(2+3а)+(а-2)=

6)-(-2а-4)-(3+5а)=

7)(5-3в)+(-3в-11)=

8)а+(а-10)-(12+а)=

9)х+(а-в)-(с-d)=

10)d-(а+в)-(с-d)=

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