方程5x+4x=3x+18怎么解?

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方程5x+4x=3x+18怎么解?
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方程5x+4x=3x+18怎么解?
方程5x+4x=3x+18怎么解?

方程5x+4x=3x+18怎么解?
5x + 4x = 3x + 18
5x + 4x - 3x = 18
(5 + 4 - 3)x = 18
6x = 18
x = 18÷6
x = 3

5x+4x=3x+18
5x=5x-3x=18
(5+4-3)x=18
6x=18
x=3

5x+4x=3x+18
5x+4x-3x=18
6x=18
x=3

5x+4x=3x+18
解:(5+4)x=3x+18
9x-3x=18
6x=18
6x/6=18/6
x=3

5x+4x=3x+18
解:9x =3x+18
9x/9=3X+18/9
X =3X+2
4X =2
4X/4 =2/4
X =0.5 乘6
x =3