Question

amplificati fractiile ;1 supra 2 
3 supra 4
2 supra 5
5 supra 6 cu
a)x,xen* b)x+1,xen ;
c)2x,xen* d) 2x+1,xen*
urgent va rog multumesc

Answer 1

1/2 cu x=1*x/2*x=x/2x
1/2 cu x+1=1*(x+1)/2*(x+1)=1x+1/2x+2
1/2 cu 2x=1*2x/2*2x=2x/4x
1/2 cu 2x+1=1*(2x+1)/2*(2x+1)=2x+1/4x+2

3/4 cu x=3x/4x
3/4 cu x+1=3*(x+1)/4*(x+1)=3x+3/4x+4
3/4 cu 2x=3*2x/4*2x=6x/8x
3/4 cu 2x+1=3*(2x+1)/4*(2x+1)=6x+3/8x+4

2/5 cu x=2x/5x
2/5 cu x+1=2*(x+1)/5*(x+1)=2x+2/5x+5
2/5 cu 2x=2*2x/5*2x=4x/10x
2/5 cu 2x+1=2*(2x+1)/5*(2x+1)=4x+2/10x+5

5/6 cu x=5x/6x
5/6 cu x+1=5*(x+1)/6*(x+1)=5x+x/6x+6
5/6 cu 2x=5*2x/6*2x=10x/12x
5/6 cu 2x+1=5*(2x+1)/6*(2x+1)=10x+5/12x+6