Solve 3x−5 = 9. (3 points) Question 3 options: 1) x = −3 2) x = 2 3) x = 7 4) x = 8
2 answers:
Answer:
x=7
Step-by-step explanation:
the other answer here is technically right but i know what you mean because i took the test and you forgot the ^ between 3 and x-5
Answer:
x = 14/3
General Formulas and Concepts:
<u>Pre-Algebra</u>
Order of Operations: BPEMDAS
- Brackets
- Parenthesis
- Exponents
- Multiplication
- Division
- Addition
- Subtraction
Equality Properties
Step-by-step explanation:
<u>Step 1: Define equation</u>
3x - 5 = 9
<u>Step 2: Solve for </u><em><u>x</u></em>
- Add 5 to both sides: 3x = 14
- Divide 3 on both sides: x = 14/3
<u>Step 3: Check</u>
<em>Plug in x into the original equation to verify it's a solution.</em>
- Substitute in <em>x</em>: 3(14/3) - 5 = 9
- Multiply: 14 - 5 = 9
- Subtract: 9 = 9
Here we see that 9 does indeed equal 9.
∴ x = 14/3 is a solution of the equation.
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