Как решить (4294+x) : 54=169 1215: (71-y) = 27 9t+4t-286=0 14x+9x+11x=272 91+48: (11-b) = 99 86-49: (2x-5) = 79

1) (4294+х) : 54=169

4294+х=169*54

4294+х=9126

х=9126-4294

х=4832

2) 1215: (71-у) = 27

71-у=1215:27

71-у=45

у=71-45

у=26

3) 9t+4t-286=0

13t=286

t = 22

4) 14x+9x+11 х=272

34 х=272

х=8

5) 91+48: (11-b) = 99

48: (11-b) = 99-91

48: (11-b) = 8

11-b=48:8 (6)

11-b=6

b=5

6) 86-49: (2x-5) = 79

49: (2x-5) = 86-79

49: (2x-5) = 7

2x-5=49:7

2x-5=7

2x=7+5

2x=12

x=6