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Elena
29 January, 23:00
Find 8m + 2n=-6 and 8m+7n=0
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Van Klein
29 January, 23:46
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Answer: m=-21/20, n=6/5
Step-by-step explanation:
8m+2n=-6
8m+7n=0
Subtract equation 1 from equation 2
8m+2n=-6
0m+5n=6
Divide equation 2 by 5
8m+2n=-6
n=6/5
Divide equation 1 by 2
4m+n=-3
n=6/5
Subtract equation 2 from equation 1
4m+0n=-21/5
Divide it by 4
m=-21/20
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