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ElenaW [278]
3 years ago
8

1.3n-0.03=-9 (solve for n) grade lvl. 7

Mathematics
1 answer:
bazaltina [42]3 years ago
4 0

Hello from MrBillDoesMath!

Answer:

-6.9


Discussion:  

1.3n - 0.03 = -9     =>              multiply both sides by 100

130n - 3 = -900 =>

130n = -900 +3 =  -897 =>     add 3 to both sides

n = -897/130  =>

n =  - (69 * 13)/ (10*13) =>

n = - 69/10 = - 6.9




Thank you,

MrB

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