Question

Sa se calculeze primele 3!!!!!!

Answer 1

1) 
1/48+1/72+1/36-1/36=
1/48+1/72+0=
/3+4/144=
5/144
2)
/72+105-80/ tot supra 120=
97/120
3)
5/4-1/6+7/8-1/3=
/30-4+21-8/tot supra24=
39/24=
13/8................

Answer 2

a.1/48+1/72+5/180-1/36=15/720+10/720+20/720-20/720=65/720=13/144
se aduce la acelasi numitor comun care este 720, prima se amplifica cu 15, a doua cu 10, a treia cu 4, ultima cu 20
b. 3/5+7/8-2/3=24/120+15/120-80/120=-41/120
numitor comun 120