Liliana solved the given equation. When she tried to verify her answer, she realized she made an error. 1 third times open paren x plus 18 close paren is equal to 7 1 third x plus 6 is equal to 7 1 third x plus 6 minus 6 is equal to 7 plus 6 1 third x is equal to 1 x is equal to 3 Which correction should Liliana make?
Answer
A
The final step should be x is equal to 1 third .
B
The first step should be 1 third x plus 54 is equal to 7 .
C
The third step should be 1 third x is equal to 13 .
D
The second step should be 1 third x plus 6 minus 6 is equal to 7 minus 6 .
Explanation
Distributing 1/3 across (x + 18) gives 1/3x + 6 = 7. To isolate 1/3x, Liliana must subtract 6 from both sides, giving 1/3x + 6 − 6 = 7 − 6. So the correction is to make the third step show subtraction of 6 on both sides; the correct choice is the statement with 7 − 6.
AI-written and checked against the verified answer.