Question

решить дроби (x-4/5)-75/100=2 1/4

Answer 1

(x-4/5)-75/100=2+(1/4)=9/4
4*(x-4/5)-75/25=9
4*x-16/5-3=9
20*x-16-12=45
20*x=45+16+12
20*x=45+18=63
x=3+3/20=3+15/100=3,15