2x - 7y = 2 and 3x + y = -20 addition/elimination
1 answer:
Answer:
x = -6, y = -2
Step-by-step explanation:
2x-7y = 2
3x + y = -20
We need to cancel out either x or y to solve the equation. I'll cancel out x first
3(2x-7y = 2)
-2(3x+y=-20)
___________
6x-21y = 6
-6x -2y = 40
____________
-23y = 46
y = -2
Plug the value for y in one of the 2 equations to solve for x
2x -7(-2) = 2
2x+14=2
2x = -12
x=-6
You might be interested in
Inequality Form: x>3
Hey there!
Formula given :
A = πr²
Solve for r
A / π = r²
r = √( A / π )
Hope it helps!
Answer:
60$
Step-by-step explanation:
Shipping is 7.50 and the 7 items are 52.5 total
2 tickets cost $8.10. 1 ticket is $4.05. Just multiply the money he has by .6 for 2 tickets and then divide the number you get by 2 for the price of 1 ticket. Hope this helps!
Answer:2.5
Step-by-step explanation:
