solve 4(5-a) - 2.1(6a)= -4.9
4(5-a) - 2.1(6a)= -4.920 -4a - 12.6a = -4.920 -16.6a = -4.9subtract 20 to both sides20 -16.6a -20 = -4.9 -20-16.6a = -24.9divide both sides by -16.6-16.6a/-16.6 = -24.9/-16.6simplifya = 1.5
