(X+2)x(0.8-0.1)=0.8x怎么解

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(X+2)x(0.8-0.1)=0.8x怎么解
(X+2)x(0.8-0.1)=0.8x怎么解

(X+2)x(0.8-0.1)=0.8x怎么解
(X+2)x(0.8-0.1)=0.8x
0.7x+1.4=0.8x
0.8x-0.7x=1.4
0.1x=1.4
x=14

(X+2)x(0.8-0.1)=0.8x
0.7x(x+2)=0.8x
7x2+7x-8x=0
x(7x-1)=0
x=0,x=1/7