Question

Приведите подобные слагаемые
-5х+11+47у-31х
1,7х -1.2у- 1.7х+0,5у
1.8 + 3 -2.8с -0,2-2y

Answer 1

$- 5x + 11 + 47y - 31x = \\ = - 36x + 47y + 11$

$1.7x - 1.2y - 1.7x + 0.5y = \\ = - 0.7y$

$1.8 + 3 - 2.8c - 0.2 - 2y = \\ = 4.6 - 2.8c - 2y$

Answer 2

-49.4х+13.8+44.7y-2.8c