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[89×(15+12905-12896)]-36×36÷12=?

Răspuns :

[89x(15+9)]-36x36:12=

(89x24)-36x36:12=

2136-36x36:12=

2136-2196:12=

2136-108=2028


[89x (12920-12896)]-1296:12= (89x24)-18=2136-18=2118