marissamichelledavis marissamichelledavis

24-12-2020
Mathematics

contestada

Solve the system of equations –2x+y = 15 and 3x + 2y = -33 by combining
the equations.

Respuesta :

radarjackson12 radarjackson12

24-12-2020

Answer:

x=-9

y=-3

Step-by-step explanation:

Answer Link

Yang100 Yang100

24-12-2020

Answer:

x=-3/7, y=99/7. (-3/7, 99/7).

Step-by-step explanation:

-2x+y=15

3x+2y=-33

----------------

-2(-2x+y)=-2(15)

3x+2y=-33

---------------------

4x-2y=-30

3x+2y=-33

----------------

7x=-3

x=-3/7

-2(-3/7)+y=15

6/7+y=15

y=15-6/7=105/7-6/7=99/7

Answer Link

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