How many solutions are there to the following system of equations?

6x + 12y = 11
4x + 8y = 3

(Points : 4)
0
1
2
infinitely many

Question

How many solutions are there to the following system of equations?

6x + 12y = 11
4x + 8y = 3

(Points : 4)
       0
       1
       2
       infinitely many

solomonzelman · Answer

6x + 12y = 11  --> divide by 6  --->   x+2y=11/6
4x + 8y = 3     --> divide by 4 --->    x+2y=3

Does 3 = 11/6  ?

anonymous · Answer

im not sure

anonymous · Answer

its 0 no real solution

solomonzelman · Answer

YES!

anonymous · Answer

Solve the following system of equations by linear combination:

2d – e = 7
d + e = 5

(Points : 4)
       There is no solution.
       There are an infinite number of solutions.
       The solution is (3, –1).
       The solution is (4, 1).

solomonzelman · Answer

No solution.

Reasoning.
x+2y=11/6  also we know that x+2y=3
so if x+2y,  =11/6 and =3, THEN 3=11/6  which is not true.

solomonzelman · Answer

2d – e = 7
d + e = 5

subtract them from each other
d=2

2+e=5,  e=3

d=2  e=3