900-12*(х:30+52)=180

Question

900-12*(х:30+52)=180

Answer 1

900-12*(x:30+52)=180

900-(0.4x+624)-180=0

900-0.4x-624-180=0
276-0.4x-180=0

96-0.4x=0

x=-(-96)/0.4
x=96/0.4
x=240