Asked by Niyah
Kim's teacher has marked this problem as one to recheck, but Kim cannot determine what she has done incorrectly. Identify Kim's error and write a correct solution.
Six less than 2 times a number is 50. What is the number?
2x – 6 = 50 (line 1)
2x – 6 – 6 = 50 – 6 (line 2)
2x = 44 (line 3)
2x ÷ 2 = 44 ÷ 2 (line 4)
x = 22 (line 5)
Six less than 2 times a number is 50. What is the number?
2x – 6 = 50 (line 1)
2x – 6 – 6 = 50 – 6 (line 2)
2x = 44 (line 3)
2x ÷ 2 = 44 ÷ 2 (line 4)
x = 22 (line 5)
Answers
Answered by
Bosnian
2 x - 6 = 50
The error is in line 2.
6 should be added on both sides of the equation, not subtracted.
2 x - 6 + 6 = 50 + 6
2 x = 56
x = 56 / 2
x = 28
The error is in line 2.
6 should be added on both sides of the equation, not subtracted.
2 x - 6 + 6 = 50 + 6
2 x = 56
x = 56 / 2
x = 28
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