simplify
1. 4ab+10bc-2ab-5cb
2. 3ba-ab+3ab-5ab
3. 4gh-5jk-2gh+7
4. 7xy+5xy-13xy
5. 7a-b-3ab
5. 2ab-3ba+7ab
6. 12ab-6ba+ba - 7ab
7. 4ab+10bc-ba-7cb
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Step-by-step explanation:
see the both images first image is containing 1,2,5,7
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solution is attached above....
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