Giá trị của X để :
56 - X / 34 = 144 / 96
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(\frac{56-x}{34}=\frac{144}{96}=\frac{3}{2}\)
\(\Rightarrow\left(56-x\right)2=34\cdot3=102\)
\(\Rightarrow56-x=102\div2\)
\(\Rightarrow56-x=51\)
\(\Rightarrow x=56-51\)
\(\Rightarrow x=5\)
\(56-\frac{x}{34}=\frac{144}{96}\)
\(\Rightarrow\frac{x}{34}=56-\frac{144}{96}\)
\(\Rightarrow\frac{x}{34}=\frac{109}{2}\)
\(\Rightarrow2x=109\cdot34=3706\)
\(\Rightarrow x=3706\div2\)
\(\Rightarrow x=1853\)
Ta có :
56-x/34=144/96
=> x/34=56-144/96
=> x/34=109/2
Áp dụng tích chất 2 phân số bằng nhau thì 2 tích chéo bằng nhau ta có:
x/34=109/2 <=> x.2=34.109
=> x.2 =3706
=> x =3706:2
=> x =1853
Vậy x=1853
x/34 = 56 - 144/96
x/34 = 109/2
x/34 = 1853/34
=> x = 1853
\(\frac{56-x}{34}=\frac{144}{96}\)
\(=\frac{56-x}{34}=\frac{3}{2}\)
\(=\frac{56-x}{34}=\frac{51}{34}\)
\(\Rightarrow56-x=51\)
\(=-x=51-56\)
\(\Rightarrow x=5\)
a) \(96-7\left(x+1\right)=14^4:14^3\)
\(\Rightarrow96-7\left(x+1\right)=14^{4-3}\)
\(\Rightarrow96-7\left(x+1\right)=14\)
\(\Rightarrow7\left(x+1\right)=96-14\)
\(\Rightarrow7\left(x+1\right)=82\)
\(\Rightarrow x+1=\dfrac{82}{7}\)
\(\Rightarrow x=\dfrac{82}{7}-1\)
\(\Rightarrow x=\dfrac{75}{7}\)
b) \(\left(5x+3^4\right)\cdot2^4=2^6\cdot7^2\)
\(\Rightarrow5x\cdot2^4+3^4\cdot2^4=2^6\cdot7^2\)
\(\Rightarrow5x\cdot2^4+6^4=\left(2^3\cdot7\right)^2\)
\(\Rightarrow80x+1296=3136\)
\(\Rightarrow80x=1840\)
\(\Rightarrow x=\dfrac{1840}{80}\)
\(\Rightarrow x=23\)
a: =>96-7(x+1)=14
=>7(x+1)=82
=>x+1=82/7
=>x=75/7
b =>5x+81=2^2*7^2=196
=>5x=115
=>x=23
2) Ta có: \(\dfrac{59-x}{19}+\dfrac{58-x}{18}=\dfrac{57-x}{17}+\dfrac{56-x}{16}\)
\(\Leftrightarrow\dfrac{59-x}{19}-1+\dfrac{58-x}{18}-1=\dfrac{57-x}{17}-1=\dfrac{56-x}{16}-1\)
\(\Leftrightarrow\dfrac{40-x}{19}+\dfrac{40-x}{18}-\dfrac{40-x}{17}-\dfrac{40-x}{16}=0\)
\(\Leftrightarrow\left(40-x\right)\left(\dfrac{1}{19}+\dfrac{1}{18}-\dfrac{1}{17}-\dfrac{1}{16}\right)=0\)
mà \(\dfrac{1}{19}+\dfrac{1}{18}-\dfrac{1}{17}-\dfrac{1}{16}\ne0\)
nên 40-x=0
hay x=40
Vậy: x=40
X/34 = 56 - 144/96
X/34 = 109/2
X/34 = 3706/34
=> X= 3706
X/34 = 56 - 144/96
X/34=109/2
X/34 = 3706/34
=>x=3706