2份之1x-1＝5份之2x-3_数学解答

2份之1x-1＝5份之2x-3

人气：283 ℃　时间：2020-08-08 06:59:52

解答

1/2x - 1 = 2/5x - 3
1/2x - 2/5x = -3 + 1
1/10x = -2
x = -2 ÷ 1/10
x = -20