13,1, 1/2-(+1/3)=3/6-2/6= 1/6
2, (-8.5)-(-4.2)= -8.5+4.2=-4.3
3,猜瞎丛 (-1/10)-11(1/5)= -1/10 - 56/5 = -1/10 - 112/10 = -113/10
4, (-2/3)-(-2/3)-(穗樱+3/4)= -4/3-(3/4)= -16/12 - 9/12 = -25/神宴12
1/6,-4.3,-4.3,-113/10,-3/4。这还要步骤的,运李指给你扰兄答旁配案好了,