5x+3(x-2)=15.6

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5x+3(x-2)=15.65x+3(x-2)=15.65x+3(x-2)=15.65x+3(x-2)=15.65x+3x-6=15.68x=21.6x=2.78x-6=15.6x=2.75x+3(x

5x+3(x-2)=15.6
5x+3(x-2)=15.6

5x+3(x-2)=15.6
5x+3(x-2)=15.6
5x+3x-6=15.6
8x=21.6
x=2.7

8x-6=15.6
x=2.7

5x+3(x-2)=15.6
5x+3x-6=15.6
8x=21.6
x=2.7

5x+3x-6=15.6
8x-6=15.6
8x=9.6
x=1.2

5X+3X-6=15.6
8X=21.6
X=2.7

原式可得 5由x+3x-6=15.6 8x=21.6 x=2.7

5x+3x-6=15.6
8x=21.6
x=21.6/8
x=2.7

5x+3(x-2)=15.6
5x+3x-6=15.6
8x-6=15.6
8x=15.6+6
8x=21.6
x=21.6/8
x=2.7

5x+3(x-2)=15.6
5x+3x-6=15.6
8x-6=15.6
8x=15.6+6
8x=21.6
x=21.6/8
x=2..7

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