Помогите решить уравнения пожалуйста:! ! ! a) (a+3 4/7) - 1 2/7 =4 3/7 , b) 2 19/23 - (5/23 + b) =1 6/23 , c) ( c-2 3/11) + 5 1/11= 7 , d) 3 4/9 + (8 - d) = 6 5/9
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а+3 4/7=5 5/7
а=2 1/7
b) 2 19/23-(5/23+b)=1 6/23
5/23+b=1 13/23
b=1 8/23
с) (с-2 3/11)+5 1/11=7
с-2 3/11=1 10/11
с=4 2/11
d) 3 4/9+(8-d)=6 5/9
8-d=3 1/9
d=4 8/9