Question

2x + 3y = 12
x + y = 8
ayuda porfa ​

Answer 1

Respuesta:

$x + y = 8 \\ x = 8 - y \\ 2x + 3y = 12 \\ 2(8 - y) + 3y = 12 \\ 16 - 2y + 3y = 12 \\ 16 + y = 12 \\ y = 12 - 16 \\ y = - 4 \\ x = 8 - y = 8 - ( - 4) = 8 + 4 = 12 \\ x = 12$

$2 \times 12 + 3 \times ( - 4) = 24 + ( - 12) = 24 - 12 = 12$

$x + y = 12 + ( - 4) = 12 - 4 = 8$

espero te sirva

Answer 2

Respuesta:

Respuesta:

\begin{gathered}x + y = 8 \\ x = 8 - y \\ 2x + 3y = 12 \\ 2(8 - y) + 3y = 12 \\ 16 - 2y + 3y = 12 \\ 16 + y = 12 \\ y = 12 - 16 \\ y = - 4 \\ x = 8 - y = 8 - ( - 4) = 8 + 4 = 12 \\ x = 12\end{gathered}

x+y=8

x=8−y

2x+3y=12

2(8−y)+3y=12

16−2y+3y=12

16+y=12

y=12−16

y=−4

x=8−y=8−(−4)=8+4=12

x=12

2 \times 12 + 3 \times ( - 4) = 24 + ( - 12) = 24 - 12 = 122×12+3×(−4)=24+(−12)=24−12=12

x + y = 12 + ( - 4) = 12 - 4 = 8x+y=12+(−4)=12−4=8

espero te sirva