Question

15-3a=9?

(-2)⁴ (-2)³(-2)=

Answer 1

Explicación paso a paso:

$15 - 3a = 9 \\ - 3a = 9 - 15 \\ - 3a = - 6 \\ a = - 6 \div ( - 3) \\ a = 2 \\ comprobamos \\ 15 - 3 \times 2 = 9 \\ 15 - 6 = 9 \\ 9 = 9$

$( { - 2})^{4} ( { - 2})^{3} ( - 2) = \\ ( { - 2})^{4 + 3 + 1} = ( { - 2})^{8} = 256$