Priskittles
04.05.2021 •
Mathematics
Lily is 90 cm tall. If Anika is 3/5 of the height of Lily, and Sadaf is 4/3 of the height of Anika, how tall is Sadaf?
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Ответ:
Ответ:
y = 2x + 6 (1)
3x - y = 6 (2)
Substitute equation (1) into (2)
3x - (2x + 6) = 6
Remove bracket
3x - 2x - 6 = 6
Combine like terms
x - 6 = 6
Add 6 to both sides
x = 6 + 6
x = 12
Substitute x = 12 into equation (1)
y = 2 (12) + 6
y = 24 + 6
y = 30
Answer : x = 12, y = 30