What is the value of n in the equation
1/2(n-1) - 3 = 3 - (2n + 3)?

x = 7/5 or 1.4.

Step-by-step explanation:

1/2(n-1) - 3 = 3 - (2n + 3)

1/2 n - 1/2 - 3 = 3 - (2n + 3)  Distribute the negative over the parentheses:

1/2 n - 1/2 - 3 =3 - 2n - 3      Bring terms in n to the left and numbers right:

1/2 n + 2n = 3 + 1/2 + 3 - 3

5/2 n = 7/2

n = 7/2 * 2/5

n = 14/10

n = 7/5 or 1.4.

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

the answer is 13 cm