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English, 08.10.2019 02:30 rk193140

7m^2 + 6.5n - 4n + 2.5m^2 - n a. 9.5m^2 + 1.5n b. 4.5m^2 + 1.5n c. 1.5m^2 - 4.2n d. 9.5m^2 - 1.5n simplify the following expression. 1/3(21m + 27) a. 7m + 27 b. 7m + 9 c. 63m + 9 d. 7m + 81 what is the sum? 7/4 + (-1/5) a. 31/20 b. 39/20 c. 6/9 d. -7/20

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7m^2 + 6.5n - 4n + 2.5m^2 - n a. 9.5m^2 + 1.5n b. 4.5m^2 + 1.5n c. 1.5m^2 - 4.2n d. 9.5m^2 - 1.5n s...
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