Question

si ab por cd = 720 y ( ab +6)cd = 816 calcule a+b+c+d


ayudaaaaaaaaaaaaa

Answer 1

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$\frac{}{ab} \times \frac{}{cd} = 720 \\ \\ \frac{}{ab} \times \frac{}{cd} + 6\frac{}{cd} = 816 \\ 720 + 6\frac{}{cd} = 816 \\ 6\frac{}{cd} = 96 \\ \frac{}{cd} =16$

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$\frac{}{ab} \times 16 = 720 \\ \frac{}{ab} = 45$

Por lo tanto:

$a = 4 \\ b = 5 \\ c = 1 \\ d = 6$

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$a + b + c + d = 4 + 5 + 1 + 6 \\ a + b + c + d = 16$