Solve each linear equation. See Examples 1–3. 0.2x - 0.5 = 0.1x + 7
Table of contents
- 0. Review of College Algebra4h 45m
- 1. Measuring Angles40m
- 2. Trigonometric Functions on Right Triangles2h 5m
- 3. Unit Circle1h 19m
- 4. Graphing Trigonometric Functions1h 19m
- 5. Inverse Trigonometric Functions and Basic Trigonometric Equations1h 41m
- 6. Trigonometric Identities and More Equations2h 34m
- 7. Non-Right Triangles1h 38m
- 8. Vectors2h 25m
- 9. Polar Equations2h 5m
- 10. Parametric Equations1h 6m
- 11. Graphing Complex Numbers1h 7m
0. Review of College Algebra
Solving Linear Equations
Multiple Choice
Solve the equation. Then state whether it is an identity, conditional, or inconsistent equation.
5x+17=8x+12−3(x+4)
A
Identity
B
Conditional
C
Inconsistent
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Verified step by step guidance1
Start by simplifying the equation. Distribute the -3 across the terms inside the parentheses: -3(x + 4) becomes -3x - 12.
Rewrite the equation with the distributed terms: 5x + 17 = 8x + 12 - 3x - 12.
Combine like terms on the right side of the equation: 8x - 3x becomes 5x, and 12 - 12 becomes 0. So, the equation simplifies to 5x + 17 = 5x.
Subtract 5x from both sides of the equation to isolate the constant terms: 5x + 17 - 5x = 5x - 5x, which simplifies to 17 = 0.
Since 17 = 0 is a false statement, the equation is inconsistent, meaning there are no values of x that satisfy the equation.
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