Question

1) -5,4a + 6b – 12, якщо а =4/9 b = -0,15;​

Answer 1

-5,4 * 4/9 + 6 * (-0,15) - 12 = -27/5 * 4/9 -0,9-12=-3/5*4-9/10-12= -12/5-9/10-12= -153/10 = -15,3