解:16.5+ x=3.2 (16×10 + 5)/10 + x = (3×10 + 2)/10 165/10 + x = 32/10 x = 32/10 - 165/10 x = - 133/10 ∴x = -13.3 ∴此方程的解为x = -13.3
16.5+ x=3.2x=16.5-3.2x=13.3谢谢 ,请采纳
16.5+ x=3.2x=3.2-16.5=-13.3