7x-5x+1.8=6.18,怎么解,急!谢谢各位、、

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7x-5x+1.8=6.18,怎么解,急!谢谢各位、、

7x-5x+1.8=6.18,怎么解,急!谢谢各位、、
7x-5x+1.8=6.18,怎么解,急!
谢谢各位、、

7x-5x+1.8=6.18,怎么解,急!谢谢各位、、
7x-5x+1.8=6.18
2x+1.8=6.18
2x=6.18-1.8=
x=4.38/2=2.19

移项2x=4.38
x=2.19

2X+1.8=6.18 2X=4.38 X=2.19

7x-5x=6.18-1,8
2x=4.38
x=2.19

即2X=4.38 所以解得x=2.19

2x=4.38
x=2.19

(7-5)x=6.18-1.8
2x=4.38
x=2.19

(7-5)X=6.18-1.8
2X=4.38
X=2.19