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samochody - y
układ równań:
x+y = 66
2x+5y = 219
x = 66-y
2(66-y)+5y = 219
x = 66-y
132-2y+5y = 219
x = 66-y
3y = 219-132
x = 66-y
3y = 87 |:3
x = 66-y
y = 29
x = 66-29 = 37
motocykle - 37
samochody - 29
y - samochody
Możemy to rozwiązać poprzez układ równań :
x+y = 66
2x+5y = 219
x = 66-y
2(66-y)+5y = 219
x = 66-y
132-2y+5y = 219
x = 66-y
3y = 219-132
x = 66-y
3y = 87 |:3
x = 66-y
y = 29
x = 66-29 = 37
Motocykli jest 37 a samochodów 29