Answer:
error in step 1
Explanation:
(x + 18) = 4(2x - 6) - 9x
Multiply through by 2 to clear the fraction
x + 18 = 8(2x - 6) - 18x
[ Eleanor made the error in not multiplying - 9x by 2 ] ← ←
x + 18 = 16x - 48 - 18x
x + 18 = - 2x - 48 ( add 2x to both sides )
3x + 18 = - 48 ( subtract 18 from both sides )
3x = - 66 ( divide both sides by 3 )
x = - 22