Resolver ejercicios de álgebra
1. [3-(2)/(5/3-1/2)] : [2+(1)/3+1/4+(9)/(13)]
2. 1/5[(1/2)-1]/3/4[1-(1/5)] / 1/3*(2-3/4-5/8)/[3/8+5/2/(2)1/3-5/6]
3. 1/5(1/2-1)/3/4(1-1/5):3/1/6-2/3/-1+2/3/(2-1/3)3*2+(1)/3+1/4+9/13/3-2/(5/3)-1/2
4. [1+1/2/2]+[1-1/3/2]/[2 (1)/(2)/(5)/(6)]+[(1)/(3)/(1)/(6)]*(23 1/2:47/12)