145, you subtract the total number with how many you sold
523-378=145
Answer:
Step-by-step explanation:
A little algebra process later...
you got the answer
Hoped this helped ya
<3
<h2><em><u>Red</u></em></h2>
3x-y=-2
y=2x+3
substitute y into first equation
3x-(2x+3)=-2
distribute
3x-2x-3=-2
add
x-3=-2
+3 both sides
x=1
solve for y
y= 2 (1)=+3
y=2+3
y=5
Pardon my handwriting lol
Answer:
because the two sides of the equation are equivalent
Step-by-step explanation: