a)29.(19-`13)-19.(29-13)
=29.6-19.16
=174-304
=-130
b) 27.75+25.75-150
=(27+25).75-150
=52.75-150
=3900-150
=3750
b,27.75+25.75-150=27.75+25.75-2.75=75.(27+25-2)=75.50=3750
a. 29.(19.13)-19.(29-13) = 29.19-29.13-19.29-19.13 = (29.19-19.29)-29.13-19.13 = -13.(29-19) = -13.10 = -130
b. 27.72+25.75-150 = 27.72+25.75-2.75 = 75.(27+25-2) = 75.50 = 3750