5X-2.6+0.4=3X+1.9用方程解,急啊

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5X-2.6+0.4=3X+1.9用方程解,急啊
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5X-2.6+0.4=3X+1.9用方程解,急啊
5X-2.6+0.4=3X+1.9用方程解,急啊

5X-2.6+0.4=3X+1.9用方程解,急啊
5X-2.6+0.4=3X+1.9
5x-3x=1.9+2.6-0.4
2x=4.1
x=2.05

2X=1.9+2.6-0.4
2X=4.1
X=2.05

5x-2.6+0.4=3x+1.9
5x-3x=2.6-0.4+1.9
2x=4.1
x=2.05

解︰5X-3x=2.6-0.4+1.9
2x= 4.1
x=2.05

5X-2.6+0.4=3X+1.9
5X-2.2=4.1
2X=4.1
X=2.05