Question

Tìm x:

( 7x - 2⁷ : 2³ ) : 5 + 7 . 3 = 29

Help me

Answer 1

Answer 2

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Answer 3

(7x - 2⁷ : 2³) : 5 + 7 . 3 = 29

(7x - 2⁴) : 5 + 21 = 29

(7x - 16) : 5 = 29 - 21

(7x - 16) : 5 = 8

7x - 16 = 8 . 5

7x - 16 = 40

7x = 40 + 16

7x = 56

x = 56 : 7

x = 8.

Answer 4

(7x-2^7:2³):5+7.3=29

(7x-2^7:2³):5+21=29

(7x-2⁴):5=29-21

(7x-2⁴):5=8

(7x-2⁴)=5.8

7x-2⁴=40

7x=40+2⁴

7x=56

x=56:7

x=8