3(7a+ 4) – 5(5 – 2a)
Multiply the first bracket by 3
Multiply the second bracket by 5
(3)(7a)(3)(4)(-5)(5)(-5)(-2a)
21a+12-25+10a
21a+10a+12-25 ( rearranging)
31a-13
Answer: 31a-13
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