4 years ago

5x+4y=-14 3x+6y=6 solve the system below by the elimation

Mathematics

1 answer:

lana66690 [7]4 years ago

8 0

Answer:

y = 4

x = -6

Step-by-step explanation:

multiply first equation by 3

3×(5x+4y)= -14 ➡ 15x + 12y = -42

multiply second equation by -5

-5×(3x+6y)= 6➡ -15x -30y = -30

now add both equations up

15x +12y -15x -30y = -42 -30 (15x will eliminate -15x)

-18y = -72

y = 4 use this to find value of x

3x + 6×4 = 6 ➡ ex = -18 ➡ x = -6

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5x+4y=-14 3x+6y=6 solve the system below by the elimation​

5x+4y=-14 3x+6y=6 solve the system below by the elimation