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fredd [130]
3 years ago
14

Solve for L P = 2l + 2w if W = 7 inches and P = 42 inches

Mathematics
2 answers:
musickatia [10]3 years ago
8 0

Answer: L = 14

Concept:

Here, we need to understand the idea of evaluation.  

When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.

Solve:

<u>Given information</u>

W = 7

P = 42

<u>Given expression</u>

P = 2L + 2W

<u>Substitute values into the expression</u>

42 = 2L + 2 (7)

<u>Simplify by multiplication</u>

42 = 2L + 14

<u>Subtract 14 on both sides</u>

42 - 14 = 2L + 14 - 14

28 = 2L

<u>Divide 2 on both sides</u>

28 / 2 = 2L / 2

\boxed{L=14}

Hope this helps!! :)

Please let me know if you have any questions

liraira [26]3 years ago
5 0

Answer:

L=14

Step-by-step explanation:

P=2L+2W

W=7

P=42

2W=14

P-2W

42-14

=28

2L=28

L=28÷2

=14

Hope this helps.

It might be wrong so sorry

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