( x - 140) : 7 = 3^ 3 - 2^3. 3
( x - 140) : 7 = 27 - 24
( x - 140) : 7 = 3
( x - 140) = 3.7
( x - 140) = 21
x = 21 + 140
x = 161
(x-140):7=27-24
(x-140):7=3
x-140=21
x=161
\(\left(x-140\right)\div7=3^3-2^3.3\)
\(\Rightarrow\left(x-140\right)\div7=27-8.3\)
\(\Rightarrow\left(x-140\right)\div7=27-24\)
\(\Rightarrow\left(x-140\right)\div7=3\)
\(\Rightarrow x\div7=3\)
\(\Rightarrow x=3.7=21\)
\(\Rightarrow x=21+140\)
\(\Rightarrow x=161\)
\(\left(x-140\right):7=3^3-2^3.3\)
\(\Rightarrow\left(x-140\right):7=27-8.3\)
\(\Rightarrow\left(x-140\right):7=27-24\)
\(\Rightarrow\left(x-140\right):7=3\)
\(\Rightarrow x-140=3.7\)
\(\Rightarrow x-140=21\)
\(\Rightarrow x=21+140\)
\(\Rightarrow x=161\)
Vậy x = 161
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