5 * ( - 1.4a + 3) - (1 - 2.5a) - 4*(0.8a+ 3) = - 7 a + 15 - 1 +2.5a - 3.2a - 12 =
-10.2a + 2.5a + 14 - 12 = - 7.7a + 2
5 * ( - 1.4a + 3) - (1 - 2.5a) - 4*(0.8a+ 3) = - 7 a + 15 - 1 +2.5a - 3.2a - 12 =
-10.2a + 2.5a + 14 - 12 = - 7.7a + 2