Answer:
x = 7/21 = 1/3
Step-by-step explanation:
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The decimal that represent 1/2 is 0.5
Table 2 represents a proportional relationship because if you divide 3 divided by 2 you get 1.5 and you will get the same for 4.5 divided by 3, 6 divided by 4, 7.5 divided by 5