a) \(\left(2x-2^5\right).8^{21}=8^{23}\)
\(\left(2x-2^5\right)=8^{23}:8^{21}\)
\(\left(2x-2^5\right)=8^2\)
\(2x-32=64\)
\(2x=64+32\)
\(2x=96\)
\(x=96:2\)
\(x=48\)
b) \(\left(6x-72\right):2+84=201\)
\(\left(6x-72\right):2=201-84\)
\(\left(6x-72\right):2=117\)
\(\left(6x-72\right)=117:2\)
\(6x-72=58,5\)
\(6x=58,5+72\)
\(6x=130,5\)
\(x=130,5:6\)
\(x=21,75\)
a) \(\left(2x-2^5\right).8^{21}=8^{23}\)
\(\left(2x-2^5\right)=8^{23}:8^{21}\)
\(2x-32=8^2\)
\(2x-32=64\)
\(2x=96\)
\(x=48\)
b) (6x-72):2+ 84= 201
(6x-72):2 = 117
6x-72 = 117.2
6x-72 = 234
6x = 306
x = 51
_Học tốt_
nhầm
a) ( 2x - 25 ) . 821 = 823
( 2x - 25 ) = 823 : 821
( 2x - 25 ) = 82
2x - 32 = 64
2x = 64 + 32
2x = 96
2x = 48
b) ( 6x - 72 ) : 2 + 84 = 201
( 6x - 72 ) : 2 = 201 - 84
( 6x - 72 ) = 117
( 6x - 72 ) = 117 . 2
6x - 72 = 234
6x = 234 + 72
6x = 306
x = 306 : 6
x = 51
