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2 years ago

-7n - 15 ≥ 21? n ≥ -4 n ≥ 7.2 n ≤ -4 n ≤ 4

Mathematics

1 answer:

ollegr [7]2 years ago

7 0

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$\diamond\large\textsf{\textbf{Question:-}}}}$

-7n-15≤21. find n

$\diamond\large\textsf{\textbf{\underline{\underline{Answer and how to solve:-}}}}$

❖ Add 15 to both sides:-

-7n≤21+15

-7n≤36

❖ Now divide by -7 on both sides:-

n≥-5.14 or

n≥-5

The inequality sign changed because we divided both sides by a negative number.

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