Subjects algebra

Linear Equation Solution Ecc776

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Question: Determine if the following linear equation has one solution, no solution, or if the solution is all real numbers. Express your solution as either a simplified fraction or decimal rounded to two places. $-8 - 8(4n - 3) = -8(-n - 3) + 6$
1. **State the problem:** We need to determine if the linear equation $$-8 - 8(4n - 3) = -8(-n - 3) + 6$$ has one solution, no solution, or infinitely many solutions (all real numbers). 2. **Expand both sides:** $$-8 - 8(4n - 3) = -8(-n - 3) + 6$$ Distribute the $-8$ on the left: $$-8 - 8 \times 4n + 8 \times 3 = -8(-n - 3) + 6$$ $$-8 - 32n + 24 = -8(-n - 3) + 6$$ Simplify the left side: $$(-8 + 24) - 32n = -8(-n - 3) + 6$$ $$16 - 32n = -8(-n - 3) + 6$$ 3. **Expand the right side:** $$-8(-n - 3) = -8 \times (-n) - 8 \times (-3) = 8n + 24$$ So the equation becomes: $$16 - 32n = 8n + 24 + 6$$ $$16 - 32n = 8n + 30$$ 4. **Collect like terms:** Bring all terms involving $n$ to one side and constants to the other: $$16 - 32n = 8n + 30$$ Add $32n$ to both sides: $$16 = 8n + 30 + 32n$$ $$16 = 40n + 30$$ Subtract $30$ from both sides: $$16 - 30 = 40n$$ $$-14 = 40n$$ 5. **Solve for $n$:** Divide both sides by $40$: $$n = \frac{-14}{40}$$ Simplify the fraction by dividing numerator and denominator by $2$: $$n = \frac{\cancel{-14}^{7}}{\cancel{40}^{20}} = -\frac{7}{20}$$ 6. **Convert to decimal rounded to two places:** $$n = -0.35$$ 7. **Conclusion:** The equation has one solution, $$n = -\frac{7}{20}$$ or $$n = -0.35$$. **Answer:** One Solution $n = -\frac{7}{20}$