Which of the following answers gives the best estimate for x given the following equation?

21x + 1,998 = 2,243
10
1,000
100
1

1 answer

To find the best estimate for x, we need to isolate the variable x in the equation 21x + 1,998 = 2,243.

Subtracting 1,998 from both sides of the equation, we have:
21x = 2,243 - 1,998
21x = 245

Dividing both sides of the equation by 21, we have:
x = 245/21
x ≈ 11.667

Therefore, the best estimate for x is not provided in the options given.