Problem
Choose all equations for which \( x=\frac{1}{2} \) is a solution. A. \( x+2=\frac{5}{2} \) B. \( x-1=\frac{3}{2} \) C. \( 5 x=10 \) D. \( 8 x=4 \)
Solution
Step 1 ：A: \( x+2=\frac{5}{2} \) : \( \frac{1}{2}+2=\frac{5}{2} \)
Step 2 ：B: \( x-1=\frac{3}{2} \) : \( \frac{1}{2}-1=\frac{3}{2} \)
Step 3 ：C: \( 5x=10 \) : \( 5\cdot\frac{1}{2}=10 \)
Step 4 ：D: \( 8x=4 \) : \( 8\cdot\frac{1}{2}=4 \)
