5. Сравни. математика дам 20 б.

308 : (a + b) * 308 : (a – b)
(140+80) : 2 * 140+80:2

500-240:2+75 * (500-240):2+75

(630+330) :3 * 180+330:3

(c+d) : 8 * (c+d) ×8

480 : 4 + b 480 : (4 +b)
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