b) \( 1 \frac{1}{2} z-2=3 \frac{1}{4} z-9 \)
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To solve the equation \( 1 \frac{1}{2} z-2=3 \frac{1}{4} z-9 \), start by converting mixed numbers to improper fractions: \( 1 \frac{1}{2} = \frac{3}{2} \) and \( 3 \frac{1}{4} = \frac{13}{4} \). The equation becomes \( \frac{3}{2} z - 2 = \frac{13}{4} z - 9 \). Next, eliminate the fractions by multiplying everything by 4, yielding \( 6z - 8 = 13z - 36 \). Rearranging gives \( 6z - 13z = -36 + 8 \) or \( -7z = -28 \). Therefore, \( z = 4 \). Solving equations like this might remind you of a treasure hunt where each step leads you closer to the prize! Multiply to clear fractions, isolate your variable, and uncover the value just like finding the last clue on your quest. If you're trying to avoid common errors, one key tip is to always double-check your arithmetic and keep track of your signs! It’s easy to misplace a negative sign or a small fraction, which can lead you on a wild goose chase instead of straight to the solution!