2x+48=158、68-5x=23、2.9x+0.28=6.08、3x—0.4乘3=5.7

问题描述:

2x+48=158、68-5x=23、2.9x+0.28=6.08、3x—0.4乘3=5.7
6x+5x=13.2、2.3x-x=7.8、12.3x-8.7=64.8、0.6x+1.7x=20.7、1.8x+1.1x=33.35、12.9x-3.6x=7.254

2x+48=158
2x=158-48
X=55
68-5x=23
-5x = 23 - 65
x=6.4
2.9x + 0.28 = 6.08
2.9x = 6.08 - 0.28
X=2
3x - 0.4*3 = 5.7
3x = 5.7 + 1.2
X=2.3
6x + 5x=13.2
11X =13.2
X = 1.2
2.3x - x =7.8
1.3x = 7.8
X = 6
12.3x-8.7=64.8
12.3X=64.8 + 8.7
x=5.98
0.6x+1.7x=20.7
2.3x = 20.7
x=9
1.8x+1.1x=33.35
2.9x=33.35
x=11.5
12.9x-3.6x=7.254
9.3x=7.254
x=0.78