Explanation:
What is the error?
The error was at the beginning when trying to multiply x-3 in bracket by 2 in equation 2(x-3)=5
where instead of 2(x-3) = 2x - 6 he/she wrote 2(x-3) = 2x-3 the mistake was the student didn't multiply 2•3
What should the student have done instead?
The student would have multiplied 2•3 which is 6, then write 2x - 6 = 5 and continued question successfully
Work problem correctly.
2(x-3)=5
2x - 6 = 5
2x - 6 + 6 = 5 + 6
2x = 11
x = 11/2
x = 5.5