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Ch. 1 - Equations and Inequalities
Lial - College Algebra 13th Edition
Lial13th EditionCollege AlgebraISBN: 9780136881063당신이 사용하는 게 아니라요?교과서 변경
2장, 문제 27

Solve each equation. 0.5x+ (4/3)x= x+10

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Start by writing the given equation clearly: \(0.5x + \frac{4}{3}x = x + 10\).
Convert the decimal \(0.5\) to a fraction to make calculations easier: \(0.5x = \frac{1}{2}x\). So the equation becomes \(\frac{1}{2}x + \frac{4}{3}x = x + 10\).
Find a common denominator for the fractions on the left side to combine them. The denominators are 2 and 3, so the common denominator is 6. Rewrite each term with denominator 6: \(\frac{3}{6}x + \frac{8}{6}x = x + 10\).
Combine the fractions on the left side: \(\frac{3}{6}x + \frac{8}{6}x = \frac{11}{6}x\). Now the equation is \(\frac{11}{6}x = x + 10\).
To isolate \(x\), subtract \(x\) from both sides: \(\frac{11}{6}x - x = 10\). Rewrite \(x\) as \(\frac{6}{6}x\) to subtract easily: \(\frac{11}{6}x - \frac{6}{6}x = 10\). Then simplify the left side to get \(\frac{5}{6}x = 10\).

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주요 개념

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Combining like terms involves adding or subtracting terms that have the same variable raised to the same power. In this equation, terms with the variable x on both sides can be combined to simplify the equation and isolate the variable.
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This concept involves manipulating fractions and decimals within equations. Converting decimals to fractions or vice versa, and finding common denominators, helps simplify terms and solve the equation accurately.
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