Respuesta :

Wolgirl

Step-by-step explanation:

for number 4:

2x + 5y = -10

2x - y = 8

subtract it

6y = -18

y = 6/-18

y = -0.3

now go back to the first equation

2x + 5 x -0.3 = -10

2x -1.5 = -10

2x = -8.5

-4.25

x = -4.25, y = -0.3

hope this help

zibahkeshiro

Answer:try to answer the rest on your own and if it is not clear, let me know

Step-by-step explanation:

Ver imagen zibahkeshiro
Ver imagen zibahkeshiro
Ver imagen zibahkeshiro