Question

Scrieti si rezolvati 5 exercitii cu scaderea fractiilor , 5 cu adunarea fractiilor , 5 cu impartirea fractiilor si 5 cu inmultirea fractiilor . DAU COROANA LA CEL MAI BUN RASPUNS !!!!!!!

Answer 1

scaderea fractiilor:
1) 1/2-1/7=1x7-1x2/14=7-2/14=5/14
2) 2/3-1/4=2x4-1x3/12=8-3/12=5/12
3) 5/4-1/2=5x2-1x4/8=10-4/8=6/8
4) 5/6-1/3=5x2-1x4/12=10-4/12=6/12
5) 7/2-1/5=7x5-1x2/10=35-2/10=33/10
adunarea fractiilor
1) 8/6+2/6=8+2/6=10/6
2) 1/2+5/7=1x7+5x2/14=7+10/14=17/14
3) 3/4+6/11=3x11+6x4/44=33+24/44=57/44
4) 5/3+4/9=5x6+4x2/18=30+8/18=38/18
5) 2/5+3/2=2x2+3x5/10=4+15/10=19/10
impartirea fractiilor
1) 1/3:5/8=1/3x8/5=1x8/3x5=8/15
2) 2/5:1/4=2/5x4/1=2x4/5x1=8/5
3) 4/3:2/4=4/3x4/2=4x4/3x2=16/6
4) 6/7:3/2=6/7x2/3=6x2/7x3=12/21
5) 8/3:5/7=8/3x7/5=8x7/3x5=56/15
inmultirea fractiilor
1) 3/4x5/6=3x5/4x6=15/24
2) 7/12x6/3=7x6/12x3=42/36
3) 8/11x5/7=8x5/11x7=40/77
4) 5/13x9/2=5x9/13x2=45/26
5) 1/45x10/2=1x10/45x2=10/90