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X x 1,7 = 8,5 0,22 x X = 12,32
X = 8,5:1,7 X =12,32:0,22
X = 5 X = 56
X x 0,26 = 1,17 x 1,04 X x 1,28 = 4,48 x 3,84
X x 0,26 = 1,2168 X x 1,28 = 17,2032
X = 1,2168:0,26 X = 17,2032:1,28
X= 4,68 X = 13,44
\(x.7+x.5-x-x.5=790\)
\(x.\left(7+5-1-5\right)=790\)
\(x.6=790\)
\(x=796:6\)
\(x=\frac{395}{3}\)
x X ( 7 + 5 - 1 - 5 ) = 790
x X 6 = 790
x = 790 : 6
Vì ko có máy tính nên mk ko ghi kết quả cho bạn d
Tim x:
x X 12 + x X 14 + x X 18 = \(\frac{21}{24}\)
x X (\(\frac{1}{2}+\frac{1}{4}+\frac{1}{8}\)) = \(\frac{21}{24}\)
x X (\(\frac{4}{8}+\frac{2}{8}+\frac{1}{8}\)) = \(\frac{21}{24}\)
x X \(\frac{9}{8}\)= \(\frac{21}{24}\)
x = \(\frac{21}{24}\): \(\frac{9}{8}\)
x = \(\frac{21}{24}\)X \(\frac{8}{9}\)
x = \(\frac{7}{9}\)
\(x\times\frac{1}{2}+x\times\frac{1}{4}+x\times\frac{1}{8}=\frac{21}{24}\)
\(\Rightarrow x\times\left[\frac{1}{2}+\frac{1}{4}+\frac{1}{8}\right]=\frac{21}{24}\)
\(\Rightarrow x\times\left[\frac{4+2+1}{8}\right]=\frac{21}{24}\)
\(\Rightarrow x\times\frac{7}{8}=\frac{21}{24}\)
\(\Rightarrow x\times\frac{7}{8}=\frac{7}{8}\)
\(\Rightarrow x=\frac{7}{8}:\frac{7}{8}=1\)
X x\(\frac{1}{2}\)+ X x\(\frac{3}{4}\)=\(\frac{6}{7}\)
=>X x(\(\frac{1}{2}\)+ \(\frac{3}{4}\)) =\(\frac{6}{7}\)
=>X x \(\frac{5}{4}\)=\(\frac{6}{7}\)
=>X=\(\frac{6}{7}\): \(\frac{5}{4}\)
=>X=\(\frac{24}{35}\)
Theo đầu bài ta có:
\(\frac{x-7}{7}+\frac{x-7}{8}=\frac{15}{56}\)
\(\Rightarrow\left(x-7\right)\cdot\frac{1}{7}+\left(x-7\right)\cdot\frac{1}{8}=\frac{15}{56}\)
\(\Rightarrow\left(x-7\right)\cdot\left(\frac{1}{7}+\frac{1}{8}\right)=\frac{15}{56}\)
\(\Rightarrow\left(x-7\right)\cdot\frac{15}{56}=\frac{15}{56}\)
\(\Rightarrow x-7=1\)
\(\Rightarrow x=8\)
1-[x(1/5+1)-2/3]=x-75
1-6/5x+2/3=x-75
1+2/3+75=x+6/5x
230/3=11/5x
x=230/3:11/5=1150/33
\(\left(1+x\right)+\left(2+x\right)+\left(3+x\right)+\)\(\left(4+x\right)+\left(5+x\right)=10\times5\)
\(\left(1+2+3+4+5\right)+\left(x+x+x+x+x\right)=50\)
\(15+5x=50\)
\(5x=35\)
\(x=7\)
Vậy \(x=7\)
\(\left(1+x\right)+\left(2+x\right)+\left(3+x\right)+\left(4+x\right)+\left(5+x\right)=10\times5\)
\(\Rightarrow1+x+2+x+3+x+4+x+5+x=50\)
\(\Rightarrow\left(1+2+3+4+5\right)+\left(x+x+x+x+x\right)=50\)
\(\Rightarrow15+5x=50\)
\(\Rightarrow5x=50-15\)
\(\Rightarrow5x=35\)
\(\Rightarrow x=35:5\)
\(\Rightarrow x=7\).
0,22 x X = 12,32 X x 0,26 = 1,17 x 1,04 X x 1,28 = 4,48 x 3,84
X = 12,32 : 0,22 X x 0,26 = 1,2168 X x 1,28 = 17,2032
X = 56. X = 1,2168 : 0,26 X = 17,2032 : 1,28
X = 4,68. X = 13,44.
tick nha.
dấu nhân là mik viết thế này X , còn x là mik viết x nha
a)0,22 X x =12,32
x=12,32:0,22
x=56
b)x X 0,26 = 1,17x1,04
x X 0,26=1,2168
x=1,2168:0,26
x=4,68
c)x X 1,28=4,48x3,84
x X 1,28 = 17,2032
x = 17,2032:1,28
x =13,44
tick nha