2x+2+x=20
3x+2=20
3x+2-2=20-2
3x=18
18/3=6
So x=6
So the shorter one is 6ft and the longer piece is 14ft. (Additional work to help support answer more) 14+6=20 and 6*2+2=14.
97 is the answer to your question
Pretty sure ( -2,-7) because from -1 you go over one then each y is going down 3 so -4 - 3 is -7
Since x is our unknown number, on one side of our equation we will have the "<span>Subtracting two times a number from 10", and on the other will be -3. So,
-3=10-2x</span>
