Question

580 упр пж помогите !!!!

Answer 1

1) 5/12*4+7= 20/12+7=20/12+84/12=104/12= 8 8/12= 8 2/3
2) 4/9*3/4+2/3= 1/3+2/3=1
3) 2/5+ 1 1/4* 1 3/5= 2/5+ 5/4*8/5=2/5+2=2/5+10/5=12/5=2.4
4) 2 3/10* 2 1/2 + 1/2= 23/10*5/2+1/2= 23/10+1/2=23/10+5/10=28/10=2.8