SOLUTION: 5{a-2b}-3a{4-b}

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Question 16730: 5{a-2b}-3a{4-b}
Answer by rahman(247) About Me  (Show Source):
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5{a-2b}-3a{4-b}
=5*a-5*2b-3a*4-(-3a)b
=5a-10b-12a+3ab
=5a-12a-10b+3ab
=(5-12)a-10b+3ab
=-7a-10b+3ab