SOLUTION: Solve by the addition method: 6x-3y=15 8x-4y=20 A. (4, 3) B. Dependent. The solutions satisfy the equation C. (1, �3) D. (�2, �9) E. (7, 9)

Question 1053317: Solve by the addition method:
6x-3y=15
8x-4y=20

A.
(4, 3)

B.
Dependent. The solutions satisfy the equation

C.
(1, �3)

D.
(�2, �9)

E.
(7, 9)
Found 2 solutions by addingup, josgarithmetic:
Answer by addingup(3677) (Show Source): You can put this solution on YOUR website!
addition method: good luck with that.
substitution method:
6x-3y=15 isolate the x on the left:
x = (y+5)/2
Sow substitute in the other equation
8x-4y = 20
[8(y+5/2)]-4y = 20
x=1/2(y+5)

Answer by josgarithmetic(39625) (Show Source): You can put this solution on YOUR website!
Do you mean "Elimination" method?

Make equivalent system:

BUT these are the same equation.
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