Explicación paso a paso:
[tex] \frac{a}{b} = \frac{7}{3} \\ a - b = 16 \\ 3a = 7b \\ 3a - 7b = 0 \\ a - b = 16 \\ 3a - 7b = 0 \\ a - b = 16( - 3) \\ 3a - 7b = 0 \\ - 3a - 3b = - 48 \\ - 10b = - 48 \\ b = \frac{ - 48}{10} = - 4.8 \\ a - b = 16 \\ a - ( - 4.8) = 16 \\ a + 4.8 = 16 \\ a = 16 - 4.8 = 11.2[/tex]
Luego 2a-2b=2(11.2)-2(4.8)=22.4-9.6=12. 8
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Explicación paso a paso:
[tex] \frac{a}{b} = \frac{7}{3} \\ a - b = 16 \\ 3a = 7b \\ 3a - 7b = 0 \\ a - b = 16 \\ 3a - 7b = 0 \\ a - b = 16( - 3) \\ 3a - 7b = 0 \\ - 3a - 3b = - 48 \\ - 10b = - 48 \\ b = \frac{ - 48}{10} = - 4.8 \\ a - b = 16 \\ a - ( - 4.8) = 16 \\ a + 4.8 = 16 \\ a = 16 - 4.8 = 11.2[/tex]
Luego 2a-2b=2(11.2)-2(4.8)=22.4-9.6=12. 8