kaykayla kaykayla

19-10-2014
Mathematics

Answered

5 (1.2k+6)=7.1k+34.4
solve this

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mariamikayla mariamikayla

19-10-2014

\(5(1.2k+6)=7.1k+34.4 \\\\ 6k+30=7.1k+34.4 \\\\ 6k-7.1k=34.4-30 \\\\ -1.1k=4.4 \\\\ \boxed{k=-\frac{4.4}{1.1}=-4}\)

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Anonymous Anonymous

19-10-2014

\(5(1.2k+6)=7.1k+34.4\\\\5\times1.2k+5\times6=7.1k+34.4\\\\6k+30=7.1k+34.4\ \ \ \ \ |subtract\ 30\ from\ both\ sides\\\\6k=7.1k+4.4\ \ \ \ \ \ |subtract\ 7.1k\ from\ both\ sides\\\\-1.1k=4.4\ \ \ \ \ |divide\ both\ sides\ by\ (-1.1)\\\\\boxed{k=-4}\)

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