x-2.875=1/8 70%x=28 3.8+4x=23 x/2.5=0.4:9 解方程,

来源:学生作业帮助网 编辑:作业帮 时间:2024/07/11 04:48:32
x-2.875=1/8 70%x=28 3.8+4x=23 x/2.5=0.4:9 解方程,
x)5ҳ075ԷP07xBXB2V7353Tx|i;ֱI*'W~ LPc0n2ggb@՘@XK\0S(Z@E\[ Z -m @>7om

x-2.875=1/8 70%x=28 3.8+4x=23 x/2.5=0.4:9 解方程,
x-2.875=1/8 70%x=28 3.8+4x=23 x/2.5=0.4:9 解方程,

x-2.875=1/8 70%x=28 3.8+4x=23 x/2.5=0.4:9 解方程,
x-2.875=1/8
x=0.125+2.875
x=3
70%x=28
0.7x=280
x=400
3.8+4x=23
4x=23-3.8
4x=19.2
x=4.8
x/2.5=0.4:9
9x=2.5×0.4
9x=1
x=1/9