Question

tìm x biết

x-5(2018-7)^0=4^21:4^19

Answer 1

\(x-5\left(2018-7\right)^0=4^{21}:4^{19}\)

\(x-5\cdot2011^0=4^{21-19}\)

\(x-5\cdot1=4^2\)

\(x-5=16\)

\(x=21\)

Answer 2

x-5(2011)⁰=4^21-19

(=)x-5=4³ 

(=)x=64-5=59

Answer 3

x - 5 .(2018 - 7)⁰ = 4²¹ : 4¹⁹

x - 5 . 1               = 16

x - 5                    = 16

x                         = 16 + 5

x                         = 21

Answer 4

\(x-5\left(2018-7\right)^0=4^{21}:4^{19}\)

\(\Rightarrow x-5.2011^0=4^2\)

\(\Rightarrow x-5=16\)

\(\Rightarrow x=16+5\)

\(\Rightarrow x=21\)

Vậy x = 21

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Answer 5

x - 5 . ( 2018 - 7 ) ^0 = 4^21 : 4^19 

x - 5 . 2011^0 = 4^21-19 

x - 5 . 1 = 4^2

x - 5 = 16 

x = 16 + 5 

x = 21 

Vậy x = 21