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A half of one third is one sixth. 1/2 of 1/3 is 1/2 x 1/3 = (1x1)/(2x3)=1/6
3x2 2x3 1x2x3 2x1x3 3x1x2 1x2x3
4+4+4and 6+6+0 and 2x3+6
by crossing out numbers like it it is 7/14 * 2/5= 7/35 You cross out when you see the same number as a factor on top and bottom. e.g.: 2/2 simplifies to 1 4/2 = (2x2)/2 = 2 12/6 = (2x2x3)/(2x3) = (2x3)/3 = 2
Set all numbers and variables equal to zero. (2x3)-(3x2)-(20x)-21=0 Next, follow the order of p.e.m.d.a.s. 6-6-20x-21=0 -20x-21=0 Separate the numbers and variables -20x=21 x= -21/20