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(c) \( \frac{y-2}{2}-\frac{y+1}{3}=\frac{1}{4} \)

Ask by Salazar Gonzalez. in Indonesia
Jan 23,2025

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Tutor-Verified Answer

Answer

\( y = \frac{19}{2} \) or \( y = 9.5 \)

Solution

Mari kita selesaikan persamaan berikut untuk mencari nilai \( y \): \[ \frac{y - 2}{2} - \frac{y + 1}{3} = \frac{1}{4} \] **Langkah 1: Menemukan KPK penyebut** Penyebut-penyebut dalam persamaan adalah 2, 3, dan 4. Kelipatan Persekutuan Kecil (KPK) dari 2, 3, dan 4 adalah 12. **Langkah 2: Mengalikan seluruh persamaan dengan KPK** Mengalikan kedua sisi persamaan dengan 12 untuk menghilangkan pecahan: \[ 12 \times \left( \frac{y - 2}{2} - \frac{y + 1}{3} \right) = 12 \times \frac{1}{4} \] **Langkah 3: Menyederhanakan persamaan** \[ 6(y - 2) - 4(y + 1) = 3 \] \[ 6y - 12 - 4y - 4 = 3 \] \[ 2y - 16 = 3 \] **Langkah 4: Menyelesaikan untuk \( y \)** \[ 2y = 3 + 16 \] \[ 2y = 19 \] \[ y = \frac{19}{2} \] **Hasil Akhir:** \[ y = \frac{19}{2} \quad \text{atau} \quad y = 9.5 \] Jadi, solusi dari persamaan tersebut adalah \( y = \frac{19}{2} \) atau \( y = 9.5 \).

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The Deep Dive

To solve the equation \( \frac{y-2}{2}-\frac{y+1}{3}=\frac{1}{4} \), first find a common denominator for the fractions, which is 12. Rewrite each term: \[ \frac{6(y-2)}{12} - \frac{4(y+1)}{12} = \frac{3}{12} \] Now combine the fractions: \[ \frac{6(y-2) - 4(y+1)}{12} = \frac{3}{12} \] Multiply both sides by 12 to eliminate the denominator: \[ 6(y-2) - 4(y+1) = 3 \] Distribute: \[ 6y - 12 - 4y - 4 = 3 \] Combine like terms: \[ 2y - 16 = 3 \] Add 16 to both sides: \[ 2y = 19 \] Finally, divide by 2: \[ y = \frac{19}{2} \] So, the solution is \( y = 9.5 \). Did you know that fractional equations like this can often feel daunting, but breaking them down into smaller parts can make them much easier to manage? It's like piecing together a puzzle—each step brings you closer to the finished picture! In everyday life, you might encounter similar equations when dealing with finances, like calculating shared expenses or splitting bills. Understanding how to manipulate these fractions can really come in handy during meal outings or trips!

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