Question

1. Зведи подібні доданки.

a) - 7x + 9x - 11x + x B) - 5.5a - a + 5.5a + a 6) 12y + 3y + 20y - 9y r) 2/3 * a - 1/6 * a + 1/2 * a - 1/12 * a

Answer 1

Ответ:

$- 7x + 9x - 11x + x = - 7x \\ - 5.5a- a + 5.5a+ a = 0 \\ 12y + 3y + 20y - 9y = 26y \\ \frac{2}{3} a - \frac{1}{6} a + \frac{1}{2} a - \frac{1}{12} a= \frac{8- 2 + 6 - 1}{12} a= \frac{11}{12} a$

Answer 2

$- 7x + 9x - 11x + x = 10x - 18x = - 7x$

$- 5.5a - a + 5.5a + a = 0$

$12y + 3y + 20y - 9y = 35y - 9y = 26y$

$\frac{2}{3} a - \frac{1}{6} a + \frac{1}{2} a - \frac{1}{12} a = \frac{8}{12} a - \frac{2}{12} a + \frac{6}{12} a - \frac{1}{12} a = \frac{14}{12} a - \frac{3}{12} a = \frac{11}{12} a$