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Solve for x. 7x−9<12

Sagot :

Spaceidn

Answer:

x < 3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

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

Algebra I

  • Equality Properties

Step-by-step explanation:

Step 1: Define

7x - 9 < 12

Step 2: Solve for x

  1. Add 9 to both sides:                    7x < 21
  2. Divide 7 on both sides:                x < 3

Here we see that any value x smaller than 3 would work as a solution to the inequality.

Answer:

x < 3

Step-by-step explanation:

7x-9 = 12

take -9 on the other side to get

7x =12+9

7x = 21

x=3

x < 3

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