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11Alexandr11 [23.1K]
4 years ago
7

2x + 4y = 24 if y = -3 then x = ____?

Mathematics
1 answer:
natulia [17]4 years ago
7 0

Answer:

x = 18

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

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

Step-by-step explanation:

<u>Step 1: Define</u>

2x + 4y = 24

y = -3

<u>Step 2: Solve for </u><em><u>x</u></em>

  1. Substitute in <em>y</em>:                     2x + 4(-3) = 24
  2. Multiply:                                2x - 12 = 24
  3. Isolate <em>x</em> term:                      2x = 36
  4. Isolate <em>x</em>:                               x = 18
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