Answer:
x = 17
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>
-243 = -9(10 + x)
<u>Step 2: Solve for </u><em><u>x</u></em>
- Divide -9 on both sides: 27 = 10 + x
- Isolate <em>x</em>: 17 = x
- Rewrite: x = 17
<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>: -243 = -9(10 + 17)
- Add: -243 = -9(27)
- Multiply: -243 = -243
Here we see that -243 does indeed equal -243.
∴ x = 17 is the solution to the equation.
23, 24, 25
hope that helps
Answer:
-12 and 2
Step-by-step explanation:
Using the identity
we get
Solving both of them we get
x=-12 or x=2