Question

aritmética pls ayuda

Answer 1

$( \frac{7}{4} )^{5} ( \frac{7}{4} )^{7} ( \frac{7}{4})^{2} ( \frac{7}{4})^{4} = (\frac{7}{4} ) ^{a}$

$( \frac{7}{4})^{5+7+2+4} = (\frac{7}{4} )^{a}$

$( \frac{7}{4})^{18} = (\frac{7}{4} )^{a}$

18 =  a