Решите 1) и 2) ........

Question

Решите 1) и 2) ........

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Answer 1

1) (1/12+1/6)÷(3/8-1/4)
1+2/12÷3-2/8
3/12÷1/8
1/4×8
отв:2
2) (1-4/9)÷(1/3-1/4)
9-4/9÷4-3/12
5/9÷1/12
5/9×12
5/3×4
отв:20/3