N№ 5.84 CL.) 8.129+8.171= 5.) 4.8.3.7-1.8.2.7= 6.) 6.35-4.4+4.4.2.65 2) S.3+3.3 니 즐음 (53 421 e.) 14.2.5-12.4 و

с) 8.129 + 8.171 = 16.3

б) 4.8 * 3.7 - 1.8 * 2.7 = 17.76 - 4.86 = 12.9

в) 6.35 - 4.4 + 4.4 * 2.65 = 6.35 - 4.4 + 11.66 = 1.95 + 11.66 = 13.61

г) \(\frac{5}{4}\) * 3 + \(\frac{3}{4}\) = \(\frac{15}{4}\) + \(\frac{3}{4}\) = \(\frac{18}{4}\) = \(\frac{9}{2}\) = 4.5

д) \(1\frac{1}{4}\) - \(\frac{11}{21}\) + \(\frac{1}{7}\) * \(\frac{2}{4}\) = \(\frac{5}{4}\) - \(\frac{11}{21}\) + \(\frac{1}{14}\) = \(\frac{5}{4}\) - \(\frac{11}{21}\) + \(\frac{1}{14}\) = \(\frac{5*21}{4*21}\) - \(\frac{11*4}{21*4}\) + \(\frac{1*6}{14*6}\) = \(\frac{105}{84}\) - \(\frac{44}{84}\) + \(\frac{6}{84}\) = \(\frac{105 - 44 + 6}{84}\) = \(\frac{67}{84}\) ≈ 0.798

e) 14.2 * \(\frac{5}{9}\) - 12.4 * \(\frac{5}{9}\) = \(\frac{5}{9}\) * (14.2 - 12.4) = \(\frac{5}{9}\) * 1.8 = \(\frac{5}{9}\) * \(\frac{18}{10}\) = \(\frac{90}{90}\) = 1