Нужно раскрыть скобку =28a+32b-12
10+1=11
10+2=12
10+3=13
10+4=14
10+5=15
10+6=16
10+7=17
10+8=18
10+9=19 думаю так.
(x + 8 17/36) +7 31/36 = 25 1/36
(x + 8 17/36) = 25 1/36 - 7 31/36
(x + 8 17/36) = 24 37/36 - 7 31/36
(x + 8 17/36) = 17 6/36
x = 17 6/36 - 8 17/36
x = 16 42/36 - 8 17/36
x = 8 25/36
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(8 25/36 + 8 17/6) + 7 31/36 = 25 1/36
12 13/45 - ( y - 5 17/45) = 3 23/45
(y-5 17/45) = 12 13/45 - 3 23/45
(y-5 17/45) = 11 58/45 - 3 23/45
(y-5 17/45) = 8 35/45
y = 8 35/45 + 5 17/45
y = 13 52/45
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12 13/45 - ( 13 52/45 - 5 17/45) = 3 23/45
помогла?
поблагодарите!
2367:3=789
8334:6=1389
9268:7=1324