Tim x :
( 6x - 39) : 3 = 201
23 + 3x = \(5^6\) : \(5^3\)
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\(\left(6x-39\right)\div3=201\)
\(6x-39=201.3\)
\(6x-39=603\)
\(6x=603+39=642\)
\(\Rightarrow x=642\div6=107\)
\(23+3x=5^6\div5^3\)
\(23+3x=5^{6-3}\)
\(23+3x=5^3=125\)
\(3x=125-23\)
\(3x=102\)
\(\Rightarrow x=34\)
\(541+\left(218-x\right)=735\)
\(218-x=735-541\)
\(218-x=194\)
\(x=218-194\)
\(x=24\)
\(5\left(x+35\right)=515\)
\(x+35=515\div5\)
\(x+35=103\)
\(x=103-35\)
\(x=68\)
Sửa:
(6x-39):3=201
6x-39=201.3
6x-39=603
6x=603+39
6x=642
x=107
23+3x=5^6:5^3
23+3x=5^3=125
3x=125-23
3x=102
x=102:3
x=34
( 6x - 39 ) : 3 = 201
6x - 39 = 603
6x = 642
x = 107
23 + 3x = 56 : 53
23 + 3x = 125
2x = 102
x = 51
a. (6x-39):3=201 \(b,23+3x=5^6:5^3\)
6x-39=201.3 \(23+3x=5^3\)
6x-39=603 \(23+3x=125\)
6x=603+39 \(3x=125-23\)
6x=642 \(3x=102\)
x=642:6 \(x=102:3\)
x=107 \(x=34\)
đúng nha
thanks bn nhìu
a
(6x-39):3=201
<<=>6x-39=603
<=>6x=642
<=>107
b
23+3x=5^6:5^3
<=>23+3x=5^3
<=>23+3x=125
<=>3x=102
<=>x=34
c
12.x-33=3^2.3^3
<=>12x-33=243
<=>12x=276
<=>x=23
(6x-39):3=201
6x-39=201.3
6x-39=603
6x=603+39
6x=642
x=107
23+5x=5^3
23+5x=125
5x=125-23
5x=102
x=102:5
x=20,4
a, \(\left(6x-39\right):3=201\)
\(\Rightarrow\) \(6x-39=603\)
\(\Rightarrow\) \(6x=642\)
\(\Rightarrow\) \(x=107\)
b, \(23+3x=5^6:5^3\)
\(\Rightarrow\) \(23+3x=5^3\)
\(\Rightarrow\) \(23+3x=125\)
\(\Rightarrow\) \(3x=102\)
\(\Rightarrow\) \(x=34\)
\(a,\left(6x-39\right):3=201\)
\(\Leftrightarrow6x-39=603\)
\(\Leftrightarrow6x=642\)
\(\Leftrightarrow x=107\)
\(b,23+3x=5^6:5^3\)
\(\Leftrightarrow23+3x=125\)
\(\Leftrightarrow3x=102\)
\(\Leftrightarrow x=34\)
Học tốt nhé!
( 6x - 39) : 3 = 201
\(\Leftrightarrow6x-39=603\)
\(\Leftrightarrow6x=642\)
\(\Leftrightarrow x=107\)
23+3x=56:53
\(\Leftrightarrow23+3x=5^3\)
\(\Leftrightarrow3x=125-23\)
\(\Leftrightarrow3x=102\)
\(\Leftrightarrow x=34\)
( 6x - 39 ) :3 = 201
6x - 39 = 201 x 3
6x - 39 = 603
6x = 603 +39
6x = 742
x = 742 :6
x =122
chắc là đúng. Bạn nên thử lại