Question

Solve the following system by elimination.
3x - 2y = 18
5x + 2y = 14
A. (0, 7)
B. (4, -3)
C. (6, -6)
D. (2, 2)

Answer 1

whats the answer

Answer 2

Add the 2 equations together. That will eliminate the y variables. Then solve for x. Then take the result of x and substitute that back into either of the equations to get the y value.

OR

Use "brute force" and sub in each x and y value given in the choices. They must result in a true statement for both equations for it to be a valid answer.

Answer 3

not helping

Answer 4

3x-2y =18
5x+2y=14

to solve by elimination, multiply each fraction so that the co efficient of either x or y will cancel out when you add or subtract

Answer 5

@dtan5457 that is redundant for this problem. Just add and the y variable goes away.

Answer 6

ill even multiply it for you

(3x-2y =18)-5
-15x+10y=-90

(5x+2y=14)3

15x+6y=42

add the 2

Answer 7

oh wow. did not see that, good eyes, @ajspeller

Answer 8

No problem