Question

x+4 = 9
x+4- □ =9- □
x = □​

Answer 1

Answer:

x+4 = 9

x+4-4=9-4

x = 5

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Answer 2

Answer:

$5 + 4 = 9 \\ 5 + 4 - 0 = 9 - 0 \\ x = 5$