Latex(\frac2 9 + \frac5 9 = \frac7 18) Latex(\frac -3 4 +\frac7 10 = \frac -15 20 +\frac 14 20 =\frac(-15+14) 20 = \frac-1 20) Latex(\frac 2 7+\frac-3 4 + \frac 5 7 =(\frac2 7 +\frac5 7)+ \frac-3 4 = \frac7 7+\frac-3 4= 1 + \frac -3 4 = \frac1 4) Latex(\frac-5 7 + 0 = 0) Latex(\frac(x^2-4x + 4) (2-x) =\frac((x-2)^2) (2-x) = \frac ( x-2) 1 = x-2) Latex(\frac(x^2-4x + 4) (2-x)=\frac(-(x^2-4x + 4)) (x-2) =\frac(-(x-2)^2) (x-2) = \frac (-( x-2)) 1 = -(x-2)=2-x) Latex(\frac(x^2-4x + 4) (2-x)=\frac(-x^2-4x + 4) (x-2) =\frac(-(x-2)^2) (x-2) = \frac (-( x-2)) 1 = -(x-2) =2-x) Latex(\frac(x^2-4x + 4) (2-x) =\frac((2-x)^2) (2-x) = \frac ( 2-x) 1 = 2-x)