1.规定新运算符号“*”的运算过程为:a*b=1/3a-1/0.4b(1)求5*(-5)的值;(2)解方程2×(2*x)=1*x2.只要最后结果;(1)1-0.5x/0.3-2/3x=0.3x/0.02+1(2)1.8-8x/1.2-1.3-3x/0.2=5x-0.4/0.2(3)x+4/0.2-x-3/0.5=2(4)0.3x+0.7
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![1.规定新运算符号“*”的运算过程为:a*b=1/3a-1/0.4b(1)求5*(-5)的值;(2)解方程2×(2*x)=1*x2.只要最后结果;(1)1-0.5x/0.3-2/3x=0.3x/0.02+1(2)1.8-8x/1.2-1.3-3x/0.2=5x-0.4/0.2(3)x+4/0.2-x-3/0.5=2(4)0.3x+0.7](/uploads/image/z/217076-68-6.jpg?t=1.%E8%A7%84%E5%AE%9A%E6%96%B0%E8%BF%90%E7%AE%97%E7%AC%A6%E5%8F%B7%E2%80%9C%2A%E2%80%9D%E7%9A%84%E8%BF%90%E7%AE%97%E8%BF%87%E7%A8%8B%E4%B8%BA%EF%BC%9Aa%2Ab%3D1%2F3a-1%2F0.4b%281%29%E6%B1%825%2A%EF%BC%88-5%EF%BC%89%E7%9A%84%E5%80%BC%EF%BC%9B%EF%BC%882%EF%BC%89%E8%A7%A3%E6%96%B9%E7%A8%8B2%C3%97%EF%BC%882%2Ax%EF%BC%89%3D1%2Ax2.%E5%8F%AA%E8%A6%81%E6%9C%80%E5%90%8E%E7%BB%93%E6%9E%9C%EF%BC%9B%EF%BC%881%EF%BC%891-0.5x%2F0.3-2%2F3x%3D0.3x%2F0.02%2B1%282%291.8-8x%2F1.2-1.3-3x%2F0.2%3D5x-0.4%2F0.2%283%29x%2B4%2F0.2-x-3%2F0.5%3D2%EF%BC%884%EF%BC%890.3x%2B0.7)
1.规定新运算符号“*”的运算过程为:a*b=1/3a-1/0.4b(1)求5*(-5)的值;(2)解方程2×(2*x)=1*x2.只要最后结果;(1)1-0.5x/0.3-2/3x=0.3x/0.02+1(2)1.8-8x/1.2-1.3-3x/0.2=5x-0.4/0.2(3)x+4/0.2-x-3/0.5=2(4)0.3x+0.7
1.规定新运算符号“*”的运算过程为:a*b=1/3a-1/0.4b
(1)求5*(-5)的值;(2)解方程2×(2*x)=1*x
2.只要最后结果;
(1)1-0.5x/0.3-2/3x=0.3x/0.02+1
(2)1.8-8x/1.2-1.3-3x/0.2=5x-0.4/0.2
(3)x+4/0.2-x-3/0.5=2
(4)0.3x+0.7/0.6-0.2x-0.3/0.8=1
1.规定新运算符号“*”的运算过程为:a*b=1/0.3a-1/0.4b
应该是1/0.3不是1/3
1.规定新运算符号“*”的运算过程为:a*b=1/3a-1/0.4b(1)求5*(-5)的值;(2)解方程2×(2*x)=1*x2.只要最后结果;(1)1-0.5x/0.3-2/3x=0.3x/0.02+1(2)1.8-8x/1.2-1.3-3x/0.2=5x-0.4/0.2(3)x+4/0.2-x-3/0.5=2(4)0.3x+0.7
(1)5*(-5)=1/3*5-2.5*(-5)
(2)2*x=1/3*2-2.5x
2×(2*x)= 中间是乘号还是*