log1/3 (x+23) =log1/140 (4x+3) log3/4

log1/3 (x+23) <= log1/3 9 x+23 => 9x => -14 log1/140 (2x+19) => log1/140 (4x+3) 2x+19 <= 4x+3-2x <= -16x => 8 log3/4 (2x-5) => log3/4 x2x-5 <= xx <= 5 log2 (3x+4) => 1 3x+4 => 23x => -2x => -2/3