Question

решите неравенство (1/7)^-3x+1>(1/49)^x+3​

Answer 1

$(\frac{1}{7} )^{-3x+1}>(\frac{1}{49} )^{x+3}\\7^{3x-1}>7^{-2x-6}\\3x-1>-2x-6\\5x>-5\\x>-1$