Question

-21 < a -16 please help me

Answer 1

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

Answer 2

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.

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