1). Sederhanakan bentuk-bentuk penjumlahan berikut.
a). 1/5a + 1/a
b). x/y + y/x
c). 2x/m + 3y/n
d). x+1/x + x/1-x
e).5m+3/2n + 3+m/n
f). r+8/r+1 + r+6/r+2
g). 2x/10x-3 + 2x+4/9x+1
a). 1/5a + 1/a
b). x/y + y/x
c). 2x/m + 3y/n
d). x+1/x + x/1-x
e).5m+3/2n + 3+m/n
f). r+8/r+1 + r+6/r+2
g). 2x/10x-3 + 2x+4/9x+1
b. x/y + y/x = x.x/x.y + y.y/x.x = x²/xy + y²/xy = x²+y²/xy
c. 2x/m + 3y/n = (2x.n+3y.m)/m.n = (2xn+3ym)/nm
d. x+1/x + x/1-x = (x+1 (1-x) + x.x)/x (1-x) = x + 1 -x²-x + x²/x-x² = 1/x-x²
e. 5m+3/2n + 3+m/n = 5m+3/2n + 6+2m / 2n = 7m + 9 / 2n
f.