Robyn incorrectly solved a rational equation Her work is shown. What error did she
make?
3.9
2x
2x(x-3)(-)-2x(x-3)()
2x-2-6x-18=9x-27
2x-6x-20-9x-27
2x²-15x+7=0
(2x-1)(x-7)=0
2x-1-0 or x-7-0
xor x=7
CLEAR
CHECK
She did not use the least common multiple of the
denominators.
She did not use the distributive property correctly
She combined like terms incorrectly.
She factored the quadratic expression incorrectly.
