PORFAVOR... ESTA ES LA TERCERA VEZ QUE PUBLICO LA MISMA PREGUNTA, AYÚDAME!!
Resolver las siguientes ecuaciones por el sistema de ecuaciones del método SUSTITUCIÓN:

A) 2x-3y=-6

x + y = 7

B) 8x+5y=-28

3x+2y=-11

Resolver las siguientes ecuaciones por el sistema de ecuaciones del método SUMA Y RESTA:

A) 5x+6y=20

4x-3y=-23

i do not know the answer i am sorry

on your paper it doesn't say the answer but the the answer is altitude

step-by-step explanation:

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x

11.2

step-by-step explanation:

when doing tangent the tangent of the angle is equal to the opposite side from the angle over the adjacent side to the angle.

tan43 = x / 12

move 12 over by multiplying each side by 12

12tan43 = x

x = about 11.2