The sale price would then be 25.5 dollars
Idk I but can u help me Bc I’m in 7th and the person that helped me doesn’t know what they are talking about
Y=-X-3
X+Y=4
You'll want to get X or Y by itself, which in this question it already is.
After that, use substitution (Plug -X-3 in place of Y in X+Y=4)
Equation should look like X+(-X-3)=4
Solve that equation
X+(-X-3)=4
X+(-X) cancels eachother out, leaving you with (-3)=4
Add 3 to both sides of (-3)=4, leaving you with 0=7
0 Can't equal 7, so this equation has no solutions
I assume you’re solving for both X and Y
9) is X= -4, Y = 6
11) is X = -2, Y = 0
I can’t read all of 13.
I hope that helps.
