Question

encontre o valor de x nas equações abaixo​

Answer 1

a)

$10^{1+x}=\frac{1}{10}\\ \\10^{1+x}=10^{-1}\\ \\1+x=-1\\ \\x=-1-1\\ \\x=-2$

b)

$3^{x-6}=81^{1-x}\\ \\3^{x-6}=(3^4)^{1-x}\\ \\3^{x-6}=3^{4-4x}\\ \\x-6=4-4x\\ \\x+4x=4+6\\ \\5x=10\\ \\x=2$