Answer:
x = 6,0
y = 0,12
Step-by-step explanation:
<h2>(x, y) = (21/13 , 84/13)</h2>
Step-by-step explanation:
x + 3y = 21
- 4x + y = 0
y = 4x
<h2>_____________</h2>
x + 3y = 21
x + 3(4x) = 21
x + 12x = 21
13x = 21
x = 21/13
y = 4x
y = 4 (21/13)
y = 84/13
(x, y) = (21/13 , 84/13)
Answer:
3a^2+12a
Step-by-step explanation:
3a(4+a)
3a*4=12a
3a*a= 3a^2
Answer:
No
Step-by-step explanation:
7 would be the solution to 3x=21, the solution to 4x=21 is 21/4 or 5.25.
There is not enough information in order to solve
