Question

1/3×(0,3с-0,6) -1/4×(0,4с-0,8) СРОЧНО!!!!!

Answer 1

$\frac{1}{3} (0.3c - 0.6) - \frac{1}{4} (0.4c - 0.8) = \frac{1 \times 3}{3 \times 10} c - \frac{1 \times 6}{3 \times 10} - \frac{1 \times 4}{4 \times 10} c + \frac{1 \times 8}{4 \times 10} = 0.1c - 0.2 - 0.1c + 0.2 = 0$