Câu hỏi của gia minh

Question

Tim X
a. 22/5:X=44/5:5/2
b. 8,35xX+6,65xX=45

Vũ Cao Minh⁀ᶦᵈᵒᶫ ( ✎﹏IDΣΛ亗 ) · Accepted Answer

a)$\frac{22}{5}:x=\frac{44}{5}:\frac{5}{2}=\frac{44}{5}.\frac{2}{5}=\frac{84}{25}$

$\Rightarrow x=\frac{22}{5}:\frac{84}{25}=\frac{22}{5}.\frac{25}{84}=\frac{55}{42}$

b) $8,35x+6,65x=45$

$\Rightarrow\left(8,35+6,65\right)x=45\Rightarrow15x=45$

$\Rightarrow x=45:15=3$

Câu trả lời:

a)$\frac{22}{5}:x=\frac{44}{5}:\frac{5}{2}=\frac{44}{5}.\frac{2}{5}=\frac{84}{25}$

$\Rightarrow x=\frac{22}{5}:\frac{84}{25}=\frac{22}{5}.\frac{25}{84}=\frac{55}{42}$

b) $8,35x+6,65x=45$

$\Rightarrow\left(8,35+6,65\right)x=45\Rightarrow15x=45$

$\Rightarrow x=45:15=3$

Serein · Answer

$a,\frac{22}{5}\div x=\frac{44}{5}\div\frac{5}{2}$

$\Rightarrow\frac{22}{5}\div x=\frac{88}{25}$

$\Rightarrow x=\frac{5}{4}$

$b,8,35\times x+6,65\times x=45$

$\Rightarrow x\times\left(8,35+6,65\right)=45$

$\Rightarrow x\times15=45$

$\Rightarrow x=3$

~Study well~

#Thạc_Trân