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rewona [7]
3 years ago
15

Select the expression equivalent to (-4x + 4.2y) - (-7x + 3.4y)

Mathematics
1 answer:
Alina [70]3 years ago
4 0

Answer:

3x + 0.8y

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

Distributive Property

<u>Algebra I</u>

  • Terms/Coefficients

Step-by-step explanation:

<u>Step 1: Define</u>

(-4x + 4.2y) - (-7x + 3.4y)

<u>Step 2: Simplify</u>

  1. [Distributive Property] Distribute negative:                                                    -4x + 4.2y + 7x - 3.4y
  2. Combine like terms (x):                                                                                    3x + 4.2y - 3.4y
  3. Combine like terms (y):                                                                                    3x + 0.8y
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Ten less than three times the sum of x and seven is twenty-six.
Orlov [11]

Answer:

<u>x = 12</u>

Step-by-step explanation:

10 - 3 ( x + 7 ) = 26

<em>First Step: Distribute</em>

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=  10 - 3 x - 21 = 26

<em>Second Step: Combine like terms</em>

10 - 21

=  - 11 - 3 x = 26

<em>Third Step: Add from both sides</em>

26 + 11

=  - 3 x = 37

<em>Fourth Step: Divide from both sides</em>

37 / - 3

<u>x = 12</u>

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Mon wants to make 5 lbs of the sugar syrup. How much water and how much sugar does he need to make 75% syrup?
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Answer:

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Step-by-step explanation:

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