A : Hế lô,goắt ì do nêm ?
B : What ?
A : Goắt là cái gì ? diu min do nêm ì goắt
B : What are you saying ?
A : Do nêm ì goắt a diu xây inh
B : Wtf
a,49x(x-21)=441
=x-21=9
=x=12
b,53x31xX=4929
x=1 643 x X =4929
x=3
c,69x(126:X)=1281
126:2=18.56521739130435( sai đề ak)
sai đề
còn phần c d e g đâu rùi.
d,79x(X:23)=316
X:23=4
X=92
e,420:(x:39)=105
X:39=4
X=156
g,1615:(x*19)=17
Xx19=95
X=5
xongggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg
sao 0 k cho t
huhu
hihi
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