4X+60=640
4X=640-60
4X=580
X=580/4=145
they are saying x = 3 so you would use the middle equation
so -4x becomes -4(3)
-4 * 3 =-12
Answer:
x=-2, y=1
Step-by-step explanation:
To solve a system of equations, you set x+3 and 2x+5 equal to each other and solve. This simplifies to x=-2. Then you plug itin to one of the equations to get y. Hope this helps and have a magnificent day!!!!! Stay safe!!!
