Evaluate the value of x in the equation: [50 − {20 + 60% of (26/13 + 24/12 + 21) − 2} + 8] = 625 / x.

Explanation

First, simplify inside the parentheses: 26/13 = 2, 24/12 = 2, so sum is 2 + 2 + 21 = 25. Then, 60% of 25 is 0.6 × 25 = 15. Substitute back: [50 − {20 + 15 − 2} + 8] = 625 / x → [50 − 33 + 8] = 625 / x → 25 = 625 / x. Solving for x gives x = 625 / 25 = 25.