Question

Solve for x: Write step by step procedures to find the answer.

{5(x - 9) - 10} + 15 = 15Solve for x:

Write step by step procedures to find the answer.

x / 5 + 12 = 24Solve for x:
Write step by step procedures to find the answer.

(3x + 5) + (2x - 4) - 4x - 2 = 0Solve for y :
Write step by step procedures to find the answer.

6y - 12 + 5y - 5 = 10y Solve for y :

Write step by step procedures to find the answer.

5y = 10y / 3

Answer 1

Let the number of cows be x and their legs be 4x.

Let the number of chicken be y and their legs be 2x.

Total number of legs = 4x + 2y.

Total number of heads = x + y.

The number of legs was 14 more than twice the number of heads.

Therefore, 2 × (x + y) + 14 = 4x + 2y.

or, 2x + 2y + 14 = 4x + 2y.

or, 2x + 14 = 4x [subtracting 2y from both sides].

or, 14 = 4x – 2x [subtracting 2x from both sides].

or, 14 = 2x.

or, x = 7 [dividing by 2 on both sides].

Therefore, the number of cows = 7.

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Answer 2

Answer:

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