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kirill [66]
2 years ago
12

I have a 2 in the tens place. when you add 18 to me, you get 39. what number am I ?

Mathematics
1 answer:
SIZIF [17.4K]2 years ago
8 0
X=number
x+18=39
minus 18 both sides
x+18-18=39-18
x+0=21
x=21
the number is 21
and it has 2 in tens palce

21
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Also, l = 2s     ....2)

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Putting value of l from 2) to 1) is :

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Putting value of m and l in terms of s in equation 3)

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