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02.07.2021 •
Mathematics
Write an equation rectangular room 3 meters longer than it is wide and its perimeter is 18 meters
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Ответ:
width = x
length = 3 + x
perimeter = x + x + ( 3 + x ) + (3+x)
18 = x + x + ( 3 + x ) + (3+x)
x + x + ( 3 + x ) + (3+x) = 18
6 + 4x = 18
4x = 12
x = 3
Ответ: