规定新运算符号*的运算过程为a*b=1/3a-1/4b.(1).解方程2*x+1*x=0.
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![规定新运算符号*的运算过程为a*b=1/3a-1/4b.(1).解方程2*x+1*x=0.](/uploads/image/z/672559-7-9.jpg?t=%E8%A7%84%E5%AE%9A%E6%96%B0%E8%BF%90%E7%AE%97%E7%AC%A6%E5%8F%B7%2A%E7%9A%84%E8%BF%90%E7%AE%97%E8%BF%87%E7%A8%8B%E4%B8%BAa%2Ab%3D1%2F3a-1%2F4b.%EF%BC%881%29.%E8%A7%A3%E6%96%B9%E7%A8%8B2%2Ax%EF%BC%8B1%2Ax%3D0.)
规定新运算符号*的运算过程为a*b=1/3a-1/4b.(1).解方程2*x+1*x=0.
规定新运算符号*的运算过程为a*b=1/3a-1/4b.(1).解方程2*x+1*x=0.
规定新运算符号*的运算过程为a*b=1/3a-1/4b.(1).解方程2*x+1*x=0.
a*b=1/3a-1/4b
则2*x+1*x=0.
[1/(3*2)-1/(4x)]+[1/(3*1)-1/(4x)]=0
[1/(3*2)+1/(3*1)]-[1/(4x)+1/(4x)]=0
1/6+1/3=1/(2x)
1/2=1/(2x)
x=1
2*x+1*x=0=1/6-1/4x+1/3-1/4x
-1/6-1/2x=0
-x-3=0
x=-3