(23,4-b):0,2=17 помогоите!!!

Question

(23,4-b):0,2=17 помогоите!!!

Answer 1

(23,4-b)÷2,0=17
(23,4-b)÷2/10=17
(23,4-b)×10/2=17
(23,4-b)×5=17
117-5b=17
-5b=17-117
-5b=-100
b=20