а)0.37*4.6-1.8*0.37+0.37*7.2=3.7⇔ 1)0.37*4.6=1.702, 2)1.8*0.37=0.666, 3)0.37*7.2=2.664, 4)1.702-0.666=1.036, 5)1.036+2.664=3.7. б)6.74*0.13+0.47*6.74+0.6*1.76=5.1⇔ 1)6.74*0.13=0.8762, 2)0.47*6.74=3.1678, 3)0.6*1.76=1.056, 4)0.8762+3.1678=4.044, 5)4.044+1.056=5.1.