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Chicarosaanca467
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[1+2 9/40:(3/4-1/120)]:1 1/5-3​

Răspuns :

Răspuns:

Explicație pas cu pas:

[1+2 9/40:(3/4-1/120)]:1 1/5-3​=[1+(2·40+9)/40:(3·30-1)/120]:(1·5+1)/5-3=

[1+89/40:89/120]:6/5-3=[1+89/40·120/89]·5/6-3=[1+120/40]·5/6-3=

[1+3]·5/6-3=(4·5)/6-3=(2·5)/3-3=10/3-(3·3)/3=10/3-9/3=1/3  

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