Question

3 3/4 - 2 3/4 = ...
8 3/5 - 4 1/2=....
2 1/3 - 1 5/6=.....
2/9 : 3/4 +1/5=....
6*14+630*(-7)/4=....
16=4*22-12:3*5=....
-5-3*(-2)/6 : 4*(-2):16/15=...
5+5*(31-30:(7-1)-7)=....
1,6 *(3/10 +2 1/4)=.....

Answer 1

3 3/4 - 2 3/4 = 1
8 3/5 - 4 1/2= 8 6/10 - 4 5/10=4 1/10
2 1/3 - 1 5/6= 2 2/6 - 1 5/6= 1 8/6 - 1 5/6= 3/6 = 1/2
2/9 : 3/4 +1/5=. 1/6 + 1/5 = 5/30 + 6/30 = 11/30
6*14+630*(-7)/4= 84 + 315*(-7/2)= 84 + (-1102 1/2)=-1018 1/2
16+4*22-12:3*5=....16+88-20=16+66=82
-5-3*(-2)/6 : 4*(-2):16/15=...(-5 + 1) : 8 *15/16= -4: -15/2= 8/15
5+5*(31-30:(7-1)-7)=.... 5+(31-30:6-7)=5+(31-5-7)=5+(31-12)=5+19=24
1,6 *(3/10 +2 1/4)=.....  16/10 * 2 11/20=16/10* 51/20 = 204/50=4 4/50= 4 2/25

Answer 2

3 3/4 - 2 3/4 = 1
8 3/5 - 4 1/2= 43/5-9/2 = 86/10-45/10 = 41/10 = 4 1/10
2 1/3 - 1 5/6= 7/3-11/6 = 14/6-11/6 = -3/6= 1/2
2/9 : 3/4 +1/5= 2/9·4/3 + 1/5 = 8/27+1/5 = 40/135+27/135 = 67/135
6*14+630*(-7)/4= 84-4410/4 = 84-1102,5 = -1018,5
16+4*22-12:3*5= 16+88-4·5 = 16+88-20 = 104-20 = 84
-5-3*(-2)/6 : 4*(-2):16/15= -5+6/6÷(-8)÷16/15 = -5+1÷(-8)÷16/15 = -5-8÷16/15 = -13·15/16 =

=195/16 = 12 3/16
5+5*(31-3):(7-1)-7)= 5+5·28÷6-7 = 5+140÷6-7 = 5+23 2/6-7 = 21 2/6 = 21 1/3
1,6 *(3/10 +2 1/4)= 1,6·(3/10+9/4) = 1,6·(6/20+45/20) = 1,6·51/20 = 81,6/20 = 81 6/10÷20 =

816/10·1/20 = 816/200 = 4 16/200 = 4 2/25