6x-1.5x=3.6+2.7

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6x-1.5x=3.6+2.76x-1.5x=3.6+2.76x-1.5x=3.6+2.76x-1.5x=3.6+2.74.5x=6.3x=6.3÷4.5x=1.46x-1.5x=3.6+2.74.5

6x-1.5x=3.6+2.7
6x-1.5x=3.6+2.7

6x-1.5x=3.6+2.7
6x-1.5x=3.6+2.7
4.5x=6.3
x=6.3÷4.5
x=1.4

6x-1.5x=3.6+2.7
4.5x=6.3
x=1.4

x=7/5或一又五分之二

4.5x=6.3
x=7/5

上式可简化为4.5x=6.3
则x=6.3/4.5=7/5=1.4