Question

0, 5^(х+7) × 0,5^(1-2х) = 2

Answer 1

0.5^x+7 * 0.5^1-2x = 2
0.5^(x+7+1-2x) = 0.5^-1
x+7+1-2x = -1
8 -x = -1
x = 9

Answer 2

спасибо