Question

Resolver método de sustitución: x+4y = -1
2x-2y = 3​

Answer 1

Respuesta:

x+4y = -1

2x-2y = 3​

x + 4y = -1

4x - 4y = 6

5x         =5

x=5/5

x=1

x+4y = -1

1+4y= -1

4y= -1-1

4y= -2

y= -2/4

y= -1/2

comprobacion

x+ 4y = -1

1+4(-1/2) = -1

1 - 4/2 = -1

1-2= -1

2x-2y = 3​

2(1) - 2(-1/2)= 3

2+2/2=3

2+1= 3

Explicación paso a paso: