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(3/8-2/5):2/5+1/2-3/4​

Răspuns :

Explicație:

- 1/40 * 5/2 + 1/2 - 3/4

- 1/8 * 1/2 + 1/2 - 3/4

- 1/16 + 1/2 - 3/4

= - 5/16