Ответ:
2. 7/36
Пошаговое объяснение:
1) 3. 1/6 + (-2. 5/9) = 3. 1/6 - 2. 5/9 = 3. 3/18 - 2. 10/18 = 2. 21/18 - 2. 10/18 = 11/18
2) 11/18 - (-1. 7/12) = 11/18 + 1. 7/12 = 22/36 + 1. 21/36 = 1. 43/36 = 2. 7/36
1) 3 1/6+(-2 5/9)=3 1/6-2 5/9=
=(3-2)+(3/18-10/18)=1+(-7/18)=1-7/18=
=18/18-7/18=11/18
2) 11/18-(-1 7/12)=11/18+1 7/12=
=1+(22/36+21/36)=1+43/36=1+1 7/36=
=2 7/36
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Ответ:
2. 7/36
Пошаговое объяснение:
1) 3. 1/6 + (-2. 5/9) = 3. 1/6 - 2. 5/9 = 3. 3/18 - 2. 10/18 = 2. 21/18 - 2. 10/18 = 11/18
2) 11/18 - (-1. 7/12) = 11/18 + 1. 7/12 = 22/36 + 1. 21/36 = 1. 43/36 = 2. 7/36
Пошаговое объяснение:
1) 3 1/6+(-2 5/9)=3 1/6-2 5/9=
=(3-2)+(3/18-10/18)=1+(-7/18)=1-7/18=
=18/18-7/18=11/18
2) 11/18-(-1 7/12)=11/18+1 7/12=
=1+(22/36+21/36)=1+43/36=1+1 7/36=
=2 7/36