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Morgarella [4.7K]
2 years ago
14

4. Solve each equation for x. (8 points: 2 points each)

Mathematics
1 answer:
maksim [4K]2 years ago
8 0

Answer:

a. x = 9 + 4y

b. x = (7y-2)/6

c. x = (17 + k)/4

d. x = (9-c)/k

Step-by-step explanation:

In each of the equations, we want to make x the formula subject

a) 3x-12y = 27

3x = 27 + 12y

3x = 3(9 + 4y)

x = 9 + 4y

b) 6x-7y = -2

6x = 7y-2

x = (7y-2)/6

c) 4x - k = 17

4x = 17 + k

x = (17 + k)/4

d) kx + c = 9

kx = 9-c

x = (9-c)/k

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What is the simplified form of the expression 3 + 8x − 2y − x + 1 + 4y?
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General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
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<u>Algebra I</u>

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Step-by-step explanation:

<u>Step 1: Define</u>

<em>Identify</em>

3 + 8x - 2y - x + 1 + 4y

<u>Step 2: Simplify</u>

  1. Combine like terms (x):                                                                                    7x + 3 - 2y + 1 + 4y
  2. Combine like terms (y):                                                                                    7x + 2y + 3 + 1
  3. Combine like terms:                                                                                         7x + 2y + 4
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