Tìm x, y ∈ Z, biết: a) ($\frac{31}{20}$ – $\frac{26}{45}$) × $\frac{-36}{35}$ ≤ x × ($\frac{51}{56}$ + $\frac{8}{21}$ + $\frac{1}{3}$) × $\frac{8}{

Bởi

Tìm x, y ∈ Z, biết:
a) ($\frac{31}{20}$ – $\frac{26}{45}$) × $\frac{-36}{35}$ ≤ x × ($\frac{51}{56}$ + $\frac{8}{21}$ + $\frac{1}{3}$) × $\frac{8}{13}$
b) $\frac{3}{x}$ + $\frac{y}{3}$ = $\frac{5}{6}$ (x khác 0)

0 bình luận về “Tìm x, y ∈ Z, biết: a) ($\frac{31}{20}$ – $\frac{26}{45}$) × $\frac{-36}{35}$ ≤ x × ($\frac{51}{56}$ + $\frac{8}{21}$ + $\frac{1}{3}$) × $\frac{8}{”

  1. a) $\frac{41}{90}$ × $\frac{-36}{35}$ = $\frac{-82}{175}$ 

    x× ( $\frac{52}{56}$ + $\frac{8}{21}$ + $\frac{1}{3}$ ) × $\frac{8}{13}$ 

    = x $\frac{18}{3}$ × $\frac{8}{13}$ 

    = x ×1= x 

    ⇒$\frac{-82}{175}$ ≤ x

    b) $\frac{3}{x}$ + $\frac{y}{3}$   = $\frac{5}{6}$

    NO BT

    Bình luận

Viết một bình luận