X=6 because if you do it backwards and add 9 to 21 then divide 6 from 30 then you get 5
Answer:
x=2/3, y=0
Step-by-step explanation:
3x + 7y = 2,
6x - 5y = 4
Make the x coefficient the same in both equations.
3x + 7y = 2
(whole thing multiplied by 2)
6x + 14y = 4
Now subtract the equations to eliminate the x variable.
6x + 14y = 4
-(6x - 5y = 4)
19y = 0
<u>y = 0</u>
Substitute 0 for y in one of the equations.
3x + 7(0) = 2
3x = 2
<u>x = 2/3</u>
Answer:
-3/2
Step-by-step explanation:
slope= rise/run = -60/40 = -6/4 = -3/2
4.5 ... 9/2 and you will get the answer