To solve the given equation 21x + 1,998 = 2,243, we need to isolate x on one side of the equation. First, we can subtract 1,998 from both sides:
21x + 1,998 - 1,998 = 2,243 - 1,998
21x = 245
Next, we can divide both sides by 21 to find the value of x:
21x / 21 = 245 / 21
x = 11.67
The best estimate for x would be around 11.67, so the closest answer from the options provided is 10.
Which of the following answers gives the best estimate for x given the following equation? 21x+1,998=2,243 (1 point)
Responses
100
100
1,000
1,000
1
1
10
1 answer