Question 38142
(-2/3)SQRT of 18) + (4/5 SQRT of 18) - (5/6 SQRT of 18)

[sqrt(18)][(-2/3)+(4/5)-(5/6)]
[sqrt(18)][(-20+24-25)/30]
[9sqrt2][-21/30]
[9sqrt2][-7/10]
(-63/10)sqrt2
Cheers,
Stan H.