Question

Tìm số tự nhiên x, biết

( 3. x -2⁴ ) . 7³ = 2.7⁴

Answer 1

3x = 2.7 + 16 = 30

x = 10

Answer 2

\(\left(3x-2^4\right)7^3=2\cdot7^4\)

\(3x-2^4=2\cdot7^4:7^3\)

\(3x-16=14\)

\(3x=30\)

\(x=10\)

Answer 3

ta co: (3×x-2^4)×7^3=2*7^4

3*x-16=2*7^4÷7^3

3*x-16=14

3*x=14+16

3*x=30

x=10

Answer 4

(3.x-2⁴).7³=4802

3.x-2⁴      =4802:7³=14

3.x          =14+2⁴=30

   x          =30:3=10

Vậy x=10

Answer 5

3x = 2.7 +16= 30

x = 10

Answer 6

(3*x-16)*343=4082

(3*x-16)=4082/343

3*x-16=4082/343

x=9 dư

Answer 7

(3*x-16)=2.7^4/7^3

(3.x-16)=2.7

3.x=16+14

3.x=30

x=30/3

x=10

vậy x=10