Respuesta :

Answer:

now first of all we should plug in 0.8 to y .

now we have this simple equation: 4x+8.(0.8)=40

4x+6.4=40

4x=33.6

x=8.4  (hope it helps :) )

Step-by-step explanation:

Answer:

[tex]4x + 8y = 40 \\ 4x + 6.4 = 40 \\ 4x = 40 - 6.4 \\ 4x = 33.6 \\ x = 8.4[/tex]

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