TimX
X x 2,9+X : 10=1,05
x-3=5
timx
x+5=6
timx
timx
3/4:6/x:8/7=3/8:4/5:6/7
999=222,5+x
timx
TimX
25 nhan (X- 590 nhan5+ 2)= 75
timx
a)x*101-x+72*99+72=21050
b)x:4+x:0,125=9,9
c)x*1,5-5,7=5,3
tim x biet
2/3 chia x/5 cong 5/7 bang 2/7 chia 3/5 cong 9/10
timX:
0.336xX:0.35=0.6