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kirill [66]
3 years ago
10

How do i solve the equation 6+x=21

Mathematics
2 answers:
Trava [24]3 years ago
6 0
Subtract 6 to both sides.
X is left on its own.
X= 15

Musya8 [376]3 years ago
4 0

answer: 15

Step-by-step explanation: you would take the 21 and subtract 6 from it and you get 15

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the length of the rectangle is twice its width. write and solve a system of linear equations to find the length L and width W of
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Answer:

2 ( m + 2 m)  = 36 is the required linear equation

Length of the rectangle is 12 ft and width =  6 ft

Step-by-step explanation:

Let the width of the rectangle = m ft.

So, the length of the rectangle = 2m  ft.

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Now, PERIMETER OF THE RECTANGLE = 2(LENGTH + WIDTH)

⇒2 ( m + 2m)  = 36

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⇒ 6m  = 36  , or m  = 36/6

⇒ m  =6 ft

So, the Width of the rectangle;  =  m = 6 ft

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Answer:

Step-by-step explanation:

Hello!

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<em>if you like my answer, please mark me brainliest !! thanks !! <3</em>

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