Question

$5•2^(x+3)+6•2^(x+2)=4$

Answer 1

$5*2^{x+3}+6*2^{x+2} = 4 \ 10*2^{x+2}+6*2^{x+2} = 4 \ 16*2^{x+2} = 4 \ 4*2^{x+2} = 1 \ 2^{x+2} = 1/4 \ x+2 = -2 \ x=-4$