c. \( \frac{y-1}{10}+\frac{1}{3}=5 \) d. \( 3\left(\frac{6 x}{4}-\frac{1}{2}\right)=\frac{4}{3} \)
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The Deep Dive
To solve the equation \( \frac{y-1}{10}+\frac{1}{3}=5 \), start by isolating the fraction. Multiply every term by 30 (the least common multiple of 10 and 3) to eliminate the denominators: \( 30 \left(\frac{y-1}{10}\right) + 30\left(\frac{1}{3}\right) = 30 \cdot 5 \). This simplifies to \( 3(y-1) + 10 = 150 \). Distributing gives \( 3y - 3 + 10 = 150 \). Adding and rearranging yields \( 3y = 143 \), leading to \( y = \frac{143}{3} \) or \( y \approx 47.67 \). For the second equation \( 3\left(\frac{6 x}{4}-\frac{1}{2}\right)=\frac{4}{3} \), start by simplifying inside the parentheses: \( \frac{6x}{4} = \frac{3x}{2} \), so you rewrite the equation as \( 3\left(\frac{3x}{2}-\frac{1}{2}\right) = \frac{4}{3} \). Distributing the 3 gives \( \frac{9x}{2} - \frac{3}{2} = \frac{4}{3} \). Multiply through by 6 to clear the fractions, resulting in \( 27x - 9 = 8 \). Solving gives \( 27x = 17 \) and thus \( x = \frac{17}{27} \) or approximately \( 0.63 \).
