Prove that the value of the expression does not depend on a:
a−(6a−(5a−8))

Step-by-step explanation:

a−(6a−(5a−8))

a-(6a-5a+8)

a-6a+5a-8

6a-6a-8

0-8

=-8

so the answer doesn't depend on a

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.