规定新运算符号*的运算过程为a*b=(1尀3)a-(1尀4)b,求方程5*(-5)和2*(2*x)=1*x的值

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2025-01-04 08:05:17
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回答1:

5*(-5)=5/3-(-5)/4=(20+15)/12=35/12
2*[2/3-x/4]=1/3-x/4 => 2/3-(2/3-x/4)/4=1/3-x/4 => 32-8+3x=16-12x => 15x=-8 ∴ x=-8/15