Respuesta :

Answer:

457

Step-by-step explanation:

57;;/*_&445

Answer:

5.3+3.5=8.8

Step-by-step explanation:

x+y=8.8

x-y=1.8

add both equations togeather which cancel out y because there is a +y and a -y

2x=8.8+1.8

2x=10.6

2      2

x=5.3

8.8-5.3=3.5

5.3-3.5=1.8

5.3+3.5=8.8

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