-1 3/4:5 1/4=-7×4/4×21=-1/3
Ответ: -1/3
32220:60=3222:6=1611:3=537
21800:20=2180:2=1090
424900:700=4249:7=607
342000:300=3420:3=1140
28140:70=2814:7=402
32400:30=3240:3=1080
364500:90=36450:9=4050
336000:800=3360:8=420
Х÷70=150:50
х÷70=3
х=3×70
х=210
B<span></span>ₐ=b₁*qᵃ⁻¹
q=b₂/b1
q=68/17=4
b₇=17*4⁶
b₇=69632
Ответ: 69632