Question

9y – 3y = 2a + 4a + 6a =
10x +20x = 3x + 5x – 6x =
8x – 15x = 3y – 12y =
-2x – 7x = - 5y – 8y =

ayudaa ​

Answer 1

Respuesta:

9y – 3y = 2a + 4a + 6a

6y=12a

y=12a/6

y=2a

10x +20x = 3x + 5x – 6x =

30x-3x-5x+6x=0

29x=0

x=0/29 indefinido

Tengo duda en el de arriba

8x – 15x =3y – 12y

-7x=-9y

x=-9y/-7

x=9y/7

-2x – 7x = - 5y – 8y

-9x=-13y

x=-13y/-9

x=13y/9