Question

(1-7/10) x=2 1/4 nizna posh

Answer 1

(1-7/10)*х=2 1/4

(10/10-7/10)*х=2 1/4

3/10*х=2 1/4

х=9/4:3/10

х=9/4*10/3

х=15/2

х=7 1/2