Solve on the domain of rational numbers. be sure to simplify your answer as much as possible and provide in decimal form.

( 2 x ) / 3 - ( 1 / 6 ) = 1 * ( 1 / 6 )

This doesn’t make sense to me it’s supposed to be lcm ( least common multiple )

Lems1. the following data set represents the scores on intelligence quotient(iq) examinations of 40 sixth-grade students at a particular school: 114, 122, 103, 118, 99, 105, 134, 125, 117, 106, 109, 104, 111, 127,133, 111, 117, 103, 120, 98, 100, 130, 141, 119, 128, 106, 109, 115,113, 121, 100, 130, 125, 117, 119, 113, 104, 108, 110, 102(a) present this data set in a frequency histogram.(b) which class interval contains the greatest number of data values? (c) is there a roughly equal number of data in each class interval? (d) does the histogram appear to be approximately symmetric? if so,about which interval is it approximately symmetric?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?