Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
a) 2012 : x + 23 = 526
2012 : x =526 -23
2012:x =503
b) x + 9,44 = 18,36
x =18,36 - 9 ,44
x =8,92
c) x - 3/4 = 6 * 1/24
x - 3 / 4 = 1 /4
x = 3/ 4 + 1 / 4
x = 1
d) x + 2/3 = 18 : 9 - 1
x + 2 / 3 = 1
x =1 - 2 / 3
x = 1 / 3
Chúc học tốt
a) \(x+9,44=18,36\)
\(\Leftrightarrow x=18,36-9,44\)
\(\Leftrightarrow x=8,92\)
b) \(2012\div x+23=526\)
\(\Leftrightarrow2012\div x+23=526\)
\(\Leftrightarrow2012\div x=526-23\)
\(\Leftrightarrow2012=503\times x\)
\(\Leftrightarrow x=2012\div503\)
\(\Leftrightarrow x=4\)
Câu a
2015 :x+53=456
2015 :x=456 - 53
2015: x=403
X =2015: 403
X=5
B)x+ 9, 44= 18, 36
X = 18, 36 - 9, 44
X = 8, 92
Vậy x bằng 8, 92
a) 2015:x+53=456
2015:x =456-53
2015:x =403
x =2015:403
x =5
b) x+9,44=18,36
x =18,36-9,44
x =8,92
c)x-\(\frac{3}{4}\)=6x\(\frac{1}{24}\)
x-\(\frac{3}{4}\) = \(\frac{1}{4}\)
x =\(\frac{1}{4}+\frac{3}{4}\)
x =1
a) \(\frac{2}{3x}=\frac{5}{2}\Leftrightarrow3x=\frac{4}{5}\Rightarrow x=\frac{4}{15}\)
b) \(\frac{x-3}{4}=\frac{1}{2}\Rightarrow x-3=2\Rightarrow x=5\)
c) \(\frac{5}{24+x}=\frac{7}{12}\Rightarrow24+x=\frac{60}{7}\Rightarrow x=\frac{-108}{7}\)
d) \(-6x=18\Rightarrow x=-3\)
A=\(\dfrac{28}{15}\)(\(\dfrac{1}{2}\))\(^2\).3+(\(\dfrac{8}{15}-\dfrac{79}{60}\)):\(\dfrac{47}{24}\) A=28\(\dfrac{28}{15}.\dfrac{1}{4}.3+\dfrac{\left(-47\right)}{60}.\dfrac{24}{47}\) A=\(\dfrac{7}{5}+\dfrac{\left(-2\right)}{5}=\dfrac{5}{5}=1\) Vậy A=1