Question

Tìm x

15x - 22 : 8 + 65 = 9^2

Answer 1

=> 15x - 2,75+ 65 = 81

=> 15x + 62,25 = 81

=>15x = 81 - 62,25 = 18,75

=> x = 18,75 : 15 = 1.25

Answer 2

\(15x-22:8+65=9^2 \Leftrightarrow 15x=91-65+22:8 \\\ \Leftrightarrow 15x=28,75 \Leftrightarrow x=\dfrac{28,75}{15} \\\ KL:............\)