What is simplified when -3(2x-y) + 2y+2(x+y) ?

-x + 4y

Step-by-step explanation:

-3(2x-y) + 2y+2(x+y)

-6x + 3y + 2y + 2x + 2y

-6x + 2x +3y + 2y + 2y

-6x + 5x + 4y

-x + 4y

expression #3 is not equivalent. the others are.

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl