解方程:( x -3 ) * ( 1+ 1 \ 2) = ( 1 +1 \ 5 ) x

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解方程:( x -3 ) * ( 1+ 1 \ 2) = ( 1 +1 \ 5 ) x
解方程:( x -3 ) * ( 1+ 1 \ 2) = ( 1 +1 \ 5 ) x

解方程:( x -3 ) * ( 1+ 1 \ 2) = ( 1 +1 \ 5 ) x
( x -3 ) * ( 1+ 1 \ 2) = ( 1 +1 \ 5 ) x
3\2*-9\2= x+1 \5 x
3\2*-9\2=6\5x
15\10-9 \2=12\10x
3 \10x=9\2
x=15

X=15

( x -3 ) * ( 1+ 1 \ 2) = ( 1 +1 \ 5 ) x
3\2*(x-3)=(6x)\5
(3x)\2-9\2=(6x)\5
(15x)\10-(12x)\10=9\2
(3x)\10=9\2
x=15