Simplify the expression and show working -2(x+y)-5y + 7-2x+12​

-3y+19

Step-by-step explanation:

-2(x+y)-5y+7-2x+12

-2x+2y-5y+7-2x+12

-2x-2x+2y-5y+7+12

0-3y+19

-3y+19

40 is the final : )

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

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