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06.05.2020 •
Mathematics
13(n + 11) = 20n + 59 solve for n
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Ответ:
n = 12
Step-by-step explanation:
Given
13(n + 11) = 20n + 59 ← distribute left side
13n + 143 = 20n + 59 ( subtract 20n from both sides )
- 7n + 143 = 59 ( subtract 143 from both sides )
- 7n = - 84 ( divide both sides by - 7 )
n = 12
Ответ:
Inverse operation
-2.4b/-2.4 = 14.4/-2.4
b = -6
b = -6