3 years ago

4(5n-7)=10n+2 9(x+3)=4x-3

1 answer:

8 0

$4(5n-7) = 10n+2\\20n-28=10n+2\\20n=10n+30\\10n=30\\n=3\\\\\\9(x+3)=4x-3\\9x+27=4x-3\\9x=4x-30\\5x=-30\\x=-6$

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