1、x=26
2、[5/1/3÷(-2)³+(0.4)²×(-x-1 /4)]×(0.6)
=[5*3÷(-8)+0.16×(-26-1 /4)]×(0.6)
=[15÷(-8)+0.16×(-105/4)]×(0.6)
=[15÷(-8)-0.04×105]×(0.6)
= -15×0.6÷8-0.04×105×0.6
= -9÷8-4.2×0.6
= -1.125-2.52
= -3.645
1、x=26
2、[5/1/3÷(-2)³+(0.4)²×(-x-1 /4)]×(0.6)
=[5*3÷(-8)+0.16×(-26-1 /4)]×(0.6)
=[15÷(-8)+0.16×(-105/4)]×(0.6)
=[15÷(-8)-0.04×105]×(0.6)
= -15×0.6÷8-0.04×105×0.6
= -9÷8-4.2×0.6
= -1.125-2.52
= -3.645