Question

(3x – 2⁴).7³ = 2.7⁴    

Answer 1

\(\left(3x-2^4\right).7^3=2.7^4\)

\(3x-2^4=2.7^4:7^3\)

\(3x-16=2.7\)

\(3x-16=14\)

\(3x=14+16\)

\(3x=30\)

\(x=30:3\)

\(x=10\)

Vậy: x = 10

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Answer 2

3x-2^4 = 2.7^4 : 7^3 = 2.7 = 14

3x = 14 + 2^4 = 14 + 16 = 30

x = 30 : 3 = 10

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Answer 3

( 3x - 2⁴ ) . 7³ = 2 . 7⁴

( 3x - 16) . 343 = 4802

3 . x - 16 = 4802 : 343

3 . x - 16 = 14

3 . x = 16 +14

3 . x = 30 

x = 30 : 3 

x = 10