Note down below rules for sign notations
- (-)(-)=(+)
- (+)(-)=(-)(+)=(-)
- (+)(+)=(+)
When combining like terms, always go from left to right.
7x-8x = -1x
9y-4y-5y=0
answer is -1x
The rotated image if below the original image, so this shows it was rotated clockwise.
In the original image line FG is a horizontal line, if it is rotated 90 degrees, it would become a vertical line. In the rotated image line FG is at an angle, so this means it was rotated 45 degrees.
The answer is a 45 degree clockwise rotation.
(42/5)*(25/7)=1050/35 or 30
