姓名 ______________________日期 ____________得分 ____ / 12解对数方程练习解对数方程 · 1–12解方程，并检验是否有增根。简单替换1.log10 (3x + 70) = 2简单替换2.log2 (4x − 76) = 2简单替换3.log3 (2x − 3) = 3简单替换4.log5 (2x − 1) = 2简单替换5.log2 (x − 6) = 3简单替换6.log10 (5x − 10) = 1简单替换7.log10 (4x + 28) = 2简单替换8.log5 (x + 17) = 2简单替换9.log5 (2x + 15) = 2简单替换10.log5 (4x − 43) = 2简单替换11.log3 (5x − 41) = 2简单替换12.log2 (2x − 8) = 5答案 — 解对数方程练习解对数方程1.x = 102.x = 203.x = 154.x = 135.x = 146.x = 47.x = 188.x = 89.x = 510.x = 1711.x = 1012.x = 20由 Math Sheet Studio 制作 · mathsheetstudio.com — 免费可打印数学练习卷