Question

(97+75/(50-5х))*3=300

Answer 1

97+75/(50-5х)=300:3
97+75/(50-5х)=100
75/(50-5х)=100-97
75/(50-5х)=3
50-5х=75/3
50-5х=25
-5х=25-50
-5х=-25
х=-25/(-5)
х=5