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Georgia [21]
3 years ago
6

Find the sum of the given polynomials. 5m + 2n, n - 3m, and 7 - 3n

Mathematics
1 answer:
Nataly_w [17]3 years ago
7 0
5m+2n+n-3m+7-3n =2m +7
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Let's solve system of equations

\displaystyle\\\left \{ {{14=-1m+b} \atop {-10=2m+b}} \right. \\\\\left \{ {{b=14+m} \atop {2m+b=-10}} \right. \\\\2m+(14+m)=-10\\3m=-24\\m=-8=>b=14+(-8)=6\\\text{Answer}: y=-8m+6

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2 years ago
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