Answer:The statement "7 = 3(7) 3(7)-21" is incorrect. Let's break it down: - 3(7) equals 21.- 3(7) - 21 equals 21 - 21, which equals 0. Step-by-step explanation:Therefore, the equation should read 0 = 0, not 7 = 0. The calculation of multiplying the numerators (assuming a fraction was intended) is not correctly shown and the equation is fundamentally flawed.