数学题2x＋60%x=7 8x-40%x=30070%x+50=260101÷110
题目
数学题 2x＋60%x=7.8 x-40%x=300 70%x+50=260 101÷1
10\10- 11 10\1
120%x-35%x=18.7
(2.6×80%+1.4×80%）÷20%
3\1x-25%x=1
x+30%x=390
数学2021-04-13 14:27:56
优质解答
(1)2.6x = 7.8 解得x = 3
(2)0.6x = 300 解得x = 500
(3)0.7x = 210 解得x = 300
(4)看不清楚
(5)0.85x = 18.7 解得x = 22
(6)(2.08 + 1.12)/0.2 = 5.6
(7)2.75x = 1 解得x = 4/11
(8)1.3x = 390 解得x = 300