7/a-2 = 7(a+2)/(a-2)(a+2) = 7(a+2)/<span>а²-4</span>
Объяснение:
.,...................
-6-3:(-15)-2•1/3 =-6+1/5-2/3=-5 4/5-2/3=-5 (12+10)/15=-5 22/15=-6 7/15