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marshall27 [118]

3 years ago

7

When 9 times a number is

1 answer:

timurjin [86]3 years ago

7 0

11

9x+30=140-x
+x +x
___________
10x+30=140
-30 -30
___________
10x=110
Divide by 10 on both sides and boom
X=11

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