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14 votes
14 votes
-21 < a -16 please help me

User Necker
by
3.1k points

2 Answers

9 votes
9 votes

Answer:

a > -5

Explanation:

-21-(a-16)<0

Pull out like factors :

-5 - a = -1 • (a + 5)

Multiply both sides by (-1)

Flip the inequality sign since you are multiplying by a negative number

a+5 > 0

Subtract 5 from both sides

a > -5

User Zweihander
by
2.9k points
6 votes
6 votes

Answer:

a > -5

Explanation:

Step 1: Flip the inequality.


  • -21 < a - 16

  • a - 16 > -21

Step 2: Add 16 to both sides.


  • a - 16 + 16 > -21 + 16

  • a > -5

Therefore, a > -5.

Have a lovely rest of your day/night, and good luck with your assignments! ♡

User JoshuaF
by
2.5k points