70000/1400х=50
1400х*50=70000
70000х=70000
х=1
70000 : (25 × 8x × 7) =50 70000 : (200x × 7) = 50 70000 : 1400x = 50 1400х = 70000 : 50 1400х = 1400 х = 1400 : 1400 х = 1 _______________