Respuesta :

kosisoolikagu
20.7 +x = 50.5

To solve it
x= 50.5 - 20.7
x = 29.8

Answer:

x = 29.8

Step-by-step explanation:

x represents the unknown number

20.7 + x = 50.5

x + 20.7 - 20.7 = 50.5 - 20.7

x = 50.5 - 20.7

x = 29.8

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