Question

10×х=8×25 х÷20=4800:80 (×-380)×50=2000 640:(25-х)=40

Answer 1

10*x=200
x=200÷10
x=20

x÷20=60
x=60*20
x=1200

x-380=2000÷50
x-380=40
x=420

25-x=640÷40
25-x=16
x=9