Объяснение:
(a +3b) /7 (3b-a) - 3a
при a=-3,b=-1/6
-3+3*(-1/6)=-3-1/2=- 3 1/2
7(3*(-1/6)+3)=17,5
17,5-3*(-3)=26,5=26 1/2
-3 1/2:26 1/2=-7/2:53/2=-7/53
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Объяснение:
(a +3b) /7 (3b-a) - 3a
при a=-3,b=-1/6
-3+3*(-1/6)=-3-1/2=- 3 1/2
7(3*(-1/6)+3)=17,5
17,5-3*(-3)=26,5=26 1/2
-3 1/2:26 1/2=-7/2:53/2=-7/53