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( 125 - 37 ) * 48 + 52 * ( 26 + 62 )
= 88 . 48 + 52 . 88
= 88 (48 + 52)
= 88 . 100
= 8800
\(\left(125-37\right).48+52.\left(25+62\right)\)
\(=88.48+52.88\)
\(=88\left(48+52\right)\)
\(=88.100\)
\(=8800\)
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61000
-1400000
2600
Cách làm là...........bấm máy tính hjhj
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a). 5x = 125
=>5x = 53
=> x = 3
b) 32x = 81
=> 32x = 34
=> 2x = 4
=> x = 2
c). 52x-3 – 2.52 = 52 .3
=>52x: 53 = 52 .3 + 2.52
=>52x: 53 = 52 .5
=>52x = 52 .5.53
=>52x = 56
=> 2x = 6
=> x=3
a) 5x = 125
x = 125 : 5
x = 25
b) 32x = 81
x = 81 : 32
x = 81/ 32
c) 52x - 3 - 2.52 = 52.3
52x - 3 - 104 = 156
x - 3 - 104 = 156 : 52
x - 3 - 104 = 3
x - 3 = 3 + 104
x - 3 = 107
x = 107 + 3
x = 110
Ko chắc lắm , sai thì Sorry nhé .
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12.(x-3):3=64+8
12.(x-3):3=72
12.(x-3) =72.3
12.(x-3) =216
x-3 =216:12
x-3 =18
x =18+3
x =21
100-7.(x-5)=65
7.(x-5)=100-65
7.(x-5)=35
x-5=35:7
x-5=5
x =5+5
x =10
Vậy x = 10
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a) (-25) + (-125) = -150
b) (-213) + (-27) = -240
c) (-26) + 78 = 52
d) 52 + (-102) = 50
e) (-37) + 84 = 47
f) (-723) + 23 = -700
a) = 150
b) = -240
c) = 52
d) = 50
e) = 47
f) = -700
Học tốt!!!
\(125:5^x+5^2=26\)
\(\Rightarrow125:5^x+25=26\)
\(\Rightarrow125:5^x=26-25\)
\(\Rightarrow125:5^x=1\)
\(\Rightarrow5^x=125:1\)
\(\Rightarrow5^x=125\)
\(\Rightarrow5^x=5^3\)
\(\Rightarrow x=3\)