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pantera1 [17]
3 years ago
9

Can someone help solve 1 + 2x = 7?​

Mathematics
2 answers:
Yanka [14]3 years ago
5 0

Answer:

3

Step-by-step explanation:

1+2x=7

7-1=6

2x=6

6/2=3

x=3

Georgia [21]3 years ago
5 0

Answer:

x=3

Step-by-step explanation:

1+2x=7   Subtract 1 from both sides to get x by itself.

2x=6   Divide both sides by two to get just x.

2x/2=6/2   Answer.

x=3

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The dimensions of a rectangle are such that its length is 3 in more than its width if the length were doubled and if the width w
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Length (L): w + 3            ⇒2(w + 3)

width (w): w                    ⇒ w - 1

Area (A) = L x w

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*******************************************

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(w² + 3w) + 176 = 2(w + 3)(w - 1)

w² + 3w + 176 = 2w² + 4w - 6

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                   0 = (w - 13) (w + 14)

0 = w - 13            0 = w + 14

w = 13                  w = -14

Since width cannot be negative, disregard -14

w = 13

Length (L): w + 3   = (13) + 3   = 16

Answer: width = 13 in, length = 16 in

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