x+2.5x=2.1怎样解

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x+2.5x=2.1怎样解x+2.5x=2.1怎样解x+2.5x=2.1怎样解3.5=2.1=0.6(1+2.5)x=2.1x=2.1/3.5=0.6x=2.1÷2.53.5x=2.1x=0.62.1

x+2.5x=2.1怎样解
x+2.5x=2.1怎样解

x+2.5x=2.1怎样解
3.5=2.1 =0.6

(1+2.5)x=2.1
x=2.1/3.5=0.6

x=2.1÷2.5

3.5x=2.1 x=0.6

2.1除3.5