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Fudgin [204]
3 years ago
9

The sum of three and seven times a number is -74. What is the number?

Mathematics
2 answers:
Dima020 [189]3 years ago
7 0
<h3>♫ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ♫</h3>

➷ Form an equation with 'x' as the unknown number

7x + 3 = -74

Subtract 3 from both sides:

7x = -77

Divide both sides by 7:

x = -11

The number is -11

<h3><u>✽</u></h3>

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ ʜᴀɴɴᴀʜ ♡

Komok [63]3 years ago
4 0

The answer to this question is -7.4, hope this helped!

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Explanation:

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Step-by-step explanation:

Perimeter of rectangle = 2*(length + width)

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Use Distributive property : a*(b +c) = a *b + a*c

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                            = x*x + x*16 + 24*x + 24*16

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                             = x² + 40x + 384

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