if 21y is a multiple of 9 where y is a digit find y
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Answered by
2
6
Step-by-step explanation:
22×9 = 198
23×9 = 207
24×9 = 216
210 +y =216
y = 216 - 210 = 6
Answered by
5
22×9=198
23×9=207
24×9=216
210+y=216
y=216-210=6
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