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\(x\times\frac{4}{7}+\frac{1}{3}\times x=\frac{2}{3}\)
\(x\times\left(\frac{4}{7}+\frac{1}{3}\right)=\frac{2}{3}\)
\(x\times\frac{19}{21}=\frac{2}{3}\)
\(x=\frac{2}{3}:\frac{19}{21}\)
\(x=\frac{2}{3}\times\frac{21}{19}=\frac{14}{19}\)
x X 14 + x X 15 = 292929
x X ( 14 + 15 ) = 292929
x X 29 = 292929
x = 292929 : 29
x =10101
x X 14 +x X 15=292929
=>x X (14+15)=292929
x X 29=292929
x=292929:29
x=10101
a) \(4590:\left(x-24+14\right)=30\)
\(x-24+14=4590:30\)
\(x-24+14=153\)
\(x-24=153-14\)
\(x-24=139\)
\(x=139+24\)
\(x=163\)
b) \(61\times\left(126:x\right)=1281\)
\(126:x=1281:61\)
\(126:x=21\)
\(x=126:21\)
\(x=6\)
a) 4590 ÷ ( x− 24 + 14 ) = 30
4590 ( x- 10 ) = 30
x - 10 = 4590 : 30
x-10 = 153
x = 153+10
x = 163
Ta có: \(x\cdot95+x\cdot60-x\cdot55=21000\)
\(\Leftrightarrow x\cdot100=21000\)
hay x=210
x * ( 95 + 60 - 55 ) = 21000
x * 100 = 21000
x = 21000 : 100
x = 210
`a)4/5:3/x xx2/11=24/165`
`(4/5xx2/11)xx 3/x=8/55`
`8/55xx3/x=8/55`
`3/x=8/55:8/55`
`3/x=1`
`3:x=1`
`x=3:1`
`x=3`
____________________________________________
`b)4/3:x/5=5/13xx4/9`
`4/3:x/5=20/117`
`x/5=4/3:20/117`
`x/5=39/5`
`x=39`
A) 4/5:3/x X 2/11=24/165
\(\dfrac{4}{5}:\dfrac{3}{x}X\dfrac{2}{11}=\dfrac{24}{165}\)
\(\dfrac{3}{x}=\dfrac{24}{165}:\dfrac{4}{5}:\dfrac{2}{11}\)
\(\dfrac{3}{x}=1\)
\(\dfrac{3}{x}=\dfrac{3}{3}\)
=> x=3
B) \(\dfrac{4}{3}:\dfrac{x}{5}=\dfrac{5}{13}x\dfrac{4}{9}\)
\(\dfrac{4}{3}:\dfrac{x}{5}=\dfrac{20}{117}\)
\(\dfrac{x}{5}=\dfrac{4}{3}:\dfrac{20}{117}\)
\(\dfrac{x}{5}=\dfrac{39}{5}\)
=> x = 39
m x 95 - m x 35 - m x 55 =225
m x (95-35-55)=225
m x 5=225
m=225:5
m=45
Đáp số: m=45
tk mình nha
\(\Rightarrow\)M\(\times\)/95-35-55/=225\(\Rightarrow\)m=225\(\div\)5=45
35 x 25 x 7 x 8 = 49 000
74 x 8 x 12 x 14 = 99 456
_HT_
=x(95-35-55+225)=230x
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