30+{96-3.[54-2.(3 mũ 2+6)]}.x=79
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30+{96-3.[54-2.(32+6)]}.x =79
30+{96-3.[54-2.15]}.x=79
30+{96-3.[54-30]}.x=79
30+{96-3.24}.x=79
30+{96-72}.x=79
30+24.x=79
24.x=79-30
24x=49
x=49/24
\(30+\left\{96-3.\left[54-2\left(3^2+6\right)\right]\right\}.x=78\)
\(30+\left\{96-3.\left[56-2.15\right]\right\}.x=78\)
\(30+\left\{96-3.\left[56-30\right]\right\}.x=78\)
\(30+\left\{96-3.26\right\}.x=78\)
\(30+\left\{96-78\right\}.x=78\)
\(30+18.x=78\)
\(\Rightarrow18.x=48\)
\(\Rightarrow x=\frac{8}{3}\)
học tốt
\(10^{30}vs\)\(2^{100}\)
\(10^{30}=\left(10^3\right)^{10}=1000^{10}\)
\(2^{100}=\left(2^{10}\right)^{10}=1024^{10}\)
Vì \(1000^{10}< 1024^{10}=>10^{30}< 2^{100}\)
\(3^{54}vs2^{81}\)
\(3^{54}=\left(3^6\right)^9=729^9\)
\(2^{81}=\left(2^9\right)^9=512^9\)
Vì \(729^9>512^9=>3^{54}>2^{81}\)
\(3^{200}=\left(3^2\right)^{100}=9^{100}\)
\(2^{300}=\left(2^3\right)^{100}=8^{100}\)
Vì \(8^{100}< 9^{100}=>2^{300}< 3^{200}\)
12x - 10x + 54 = 86
\(\Rightarrow\)12x - 10x = 86 - 54
\(\Rightarrow\)2x = 32
\(\Rightarrow\)x = 32 : 2
\(\Rightarrow\) x= 16
12x-10x+54=86
=(12-10)x+54=86
(12-10)x =32
2x =32
x =32chia2
x =16
\(\Leftrightarrow x:3+367\cdot\left(-2\right)=-60\)
=>x:3=674
hay x=2022
\(30+\left\{96-3.\left[54-2.\left(3^{2+6}\right)\right]\right\}.x=79\)
\(30+\left\{96-3.\left[54-2.6561\right]\right\}.x=79\)
\(30+\left\{96-3.\left[54-13122\right]\right\}.x=79\)
\(30+\left\{96-3.-13068\right\}.x=79\)
\(30+\left\{96--39204\right\}.x=79\)
\(30+39300.x=79\)
\(39300.x=79-30\)
\(39300.x=49\)
\(\Rightarrow x=\frac{39300}{49}\)