Question

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Answer 1

Ex 1

459-(143-62:2+104)=

459-(143-31+104)

459-(112+104)

459-216=243

800-(64:2+72:3-19x2)

800-(32+24-38)

800-(56-38)

800-18=982

(57:3+16x5-34:2)+315

(19+80-17)+315

(99-17)+315

82+315=397

Ex 2

A) (15+32)x(39:3)

47x13=611

B) 15+(65:5+92)

15+(12+92)

15+104=119

C) (75x3-18)-12

(225-18)-12

207-12=195

Ex 3

15+(36:6+24:2)

15+(6+12)

15+18=33 (zile)