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(311 + 205) x 6 - 678 =.........
(15 x 4 - 47) + 2 x 33 =..
3 900 - (39 x 13 + 14) =


311 205 X 6 678 15 X 4 47 2 X 33 3 900 39 X 13 14 class=

Răspuns :

simplu doar calculezi

prima=2418

a doua=79

a treia=3379

Răspuns:

Salutare!

(311+205)×6-678=

516×6-678=

3 096-678=

2 418

(15×4-47)+2×33=

(60-47)+2×33=

13+2×33=

13+66=

79

3 900-(39×13+14)=

3 900-(507+14)=

3 900-521=

3 379

Baftă!