anitadefrances
04.02.2020 •
Mathematics
John's age is seventeen years less than twice isabella's age. together, the sum of their ages is 40. how old is john?
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Ответ:
Johns' age is 2x-17
x+2x-17=40
3x-17=40
3x=57
x=19
Isabella's age is 19, but it asked for John's age
John is 2(19)-17=21
John's age is 21
Ответ:
Y= -4x+11
Step-by-step explanation: