5x -1=3x -5
step by step pls

x=-2

Step-by-step explanation:

first you want to subtract 3x from 5x

5x-1=3x-5

-3x  -3x

so then you get

2x-1=-5

then you want to add 1 to the -5

2x-1=-5

   +1 +1

which gets you

2x=-4

dive both sides by 2

2x/2=-4/2

then you get

X=-2

so the rectangle is 80cm (area)

now to find the area of a triangle.

base times height.

4 times 8.

your answer is 96cm.

hope this .