Question

105:(69-4z)=17 помгите​

Answer 1

$105:(69-4z)=17\\\frac{105}{69-4z}=17\\105=17(69-4z)\\105=1173-68z\\68z=1173-105\\68z=1068\\z=\frac{267}{17}=15\frac{12}{17}$