Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(x+x:0,25+x.2+x:0,125=0,45\)
\(\Leftrightarrow x+x:\dfrac{1}{4}+x.2+x:\dfrac{1}{8}=0,45\)
\(\Leftrightarrow x+x.4+x.2+x.8=0,45\)
\(\Leftrightarrow x\left(1+4+2+8\right)=0,45\)
\(\Leftrightarrow x.15=0,45\)
\(\Leftrightarrow x=0,03\)
X + X : 0.25 + X x 2 + X : 0.125 = 0.45
X + X x 4 + X x 2 + X x 8 = 0.45
X x (1+4+2+8)= 0.45
X x 15 = 0.45
X= 0.45 : 15
X= 0.03
a) \(\frac{10061006}{20122012}=\frac{10061006}{10061006\times2}=\frac{1}{2}\).
b) \(\frac{a}{35}=\frac{27}{45}\Leftrightarrow a=\frac{27\times35}{45}=\frac{3\times9\times5\times7}{5\times9}=21\).
\(x\cdot0,3+x\cdot0,1+x\cdot0,6+x=8\)
=>\(x\left(0,3+0,1+0,6+1\right)=8\)
=>2x=8
=>x=8/2=4
\(\dfrac{13}{2}\) : 4\(\dfrac{2}{3}\): 2
= \(\dfrac{13}{2}\): \(\dfrac{14}{3}\):2
= \(\dfrac{13}{2}\) \(\times\) \(\dfrac{3}{14}\):2
= \(\dfrac{39}{28}\) : 2
= \(\dfrac{39}{28}\) \(\times\) \(\dfrac{1}{2}\)
= \(\dfrac{39}{56}\)
\(A\text{×}0,6+A:0,25=40,94\)
\(A\text{×}0,6+A\text{×}4=40,94\)
\(A\text{×}\left(0,6+4\right)=40,94\)
\(A\text{×}4,6=40,94\)
\(A=40,94:4,6\)
\(A=8,9\)