Answer:
n = 18
Step-by-step explanation:
- Add 8 to each side, so it now looks like this:
- Multiply each side by 3 to cancel out the 3 under n. It should now look like this: n = 18
I hope this helps!
Eliminate x's by adding te 2 equations
add them
-2x+15y=24
<u>2x+9y=24 +</u>
0x+24y=48
24y=48
divide both sides by 24
y=2
sub back
2x+9y=24
2x+9(2)=24
2x+18=24
minus 18 both sides
2x=6
divide 2
x=3
x=3
y=2
(x,y)
(3,2)
Answer:
Step-by-step explanation:
(−∞,∞)
Move constant over (5x=38+2), combine terms (5x=40), divide both sides by 5 (x=8)
Answer:
x = 0
x = 7/5
x = -2/3
Step-by-step explanation:
x2 =0
x=0
5x -7 =0
5x = 7
x = 7/5
3x+2 =0
3x = -2
x = -2/3
These are all the 3 roots of this equation
