20 + 17y = -6 + 15y
First, regroup your terms.
Second, take away '15y' from each side.
Third, subtract '17y - 15y' to get '2y'.
Fourth, take away '20' from both sides.
Fifth, simplify '-6 - 20' to get '-26'.
Sixth, divide both sides by '2'.
Seventh, how many times goes 2 go into 26? 26 ÷ 2 = 13.
Answer:
y = -13
The letter R is on the yellow section, which indicates the yellow area is plane R.
Now see what points and lines are on the yellow sections.
Point M, point R, line F are all in the yellow area. Point X and Y are at the intersection of the two planes, so could be part of both.
Based on the provided answers, the answer would be: Point M and line f.
4 is the least the amount of sides the polygon can have