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\(4\left(x-5\right)-2^3=2^4.3\)
\(\Rightarrow4x-20-8=48\)
\(\Rightarrow4x=76\Rightarrow x=19\)
4(x-5) - 2^3 =2^4.3
4(x-5)-2^3=16.3
4(x-5)-2^3=48
4(x-5)=48+2^3
4(x-5)=56
x-5=56:4
x-5=14
x=14+5
x=19
sai mong mn thông cảm nha
\(4\cdot\left(5-x\right)-2^3=2^4\cdot3\)
\(\Rightarrow4\cdot\left(5-x\right)-2^3=16\cdot3\)
\(\Rightarrow4\cdot\left(5-x\right)-2^3=48\)
\(\Rightarrow4\cdot\left(5-x\right)=48+8\)
\(\Rightarrow4\cdot\left(5-x\right)=56\)
\(\Rightarrow5-x=56:4\)
\(\Rightarrow5-x=14\)
\(\Rightarrow x=5-14\)
\(\Rightarrow x=-9\)
240-[23+(13+24.3-x)]=132
240-[23+(13+168-x)]=132
240-[23+(181-x)]=132
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x-8:4-(46-23.2+6.3)=0
\(x-8:4-\left(46-23.2+6.3\right)=0\)
\(x-2-\left(46-46+18\right)=0\)
\(x-2-18=0\)
\(x-2=0+18\)
\(x-2=18\)
\(x=18+2\)
\(x=20\)
\(4\left(x-5\right)-16=24\cdot3\)
\(\Rightarrow4\left(x-5\right)-16=72\)
\(\Rightarrow4\left(x-5\right)=72+16\)
\(\Rightarrow4\left(x-5\right)=88\)
\(\Rightarrow x-5=\dfrac{88}{4}\)
\(\Rightarrow x-5=22\)
\(\Rightarrow x=22+5\)
\(\Rightarrow x=27\)
\(4.\left(x-5\right)-16=24.3\)
\(4.\left(x-5\right)-16=72\)
\(4.\left(x-5\right)=72+16\)
\(4.x-5=88\)
\(x-5=88:4\)
\(x-5=22\)
\(x=22+5\)
\(x=27\)
\(1,\frac{2}{3}+\frac{4}{9}+\frac{1}{5}+\frac{2}{15}+\frac{3}{2}-\frac{17}{18}\)
\(< =>\frac{4}{9}+\frac{3}{2}+\left(\frac{2}{3}+\frac{1}{5}+\frac{2}{15}\right)-\frac{17}{18}\)
\(< =>\frac{8}{18}+\frac{27}{18}+\left(\frac{10}{15}+\frac{3}{15}+\frac{2}{15}\right)-\frac{17}{18}\)
\(< =>\frac{35}{18}+1-\frac{17}{18}\)
\(< =>\frac{53}{18}-\frac{17}{18}\)
\(< =>2\)
\(2,\frac{13}{28}\cdot\frac{5}{12}-\frac{5}{28}\cdot\frac{1}{12}\)
\(< =>\left(\frac{13}{28}-\frac{5}{28}\right)\cdot\left(\frac{5}{12}-\frac{1}{12}\right)\)
\(< =>\frac{2}{7}\cdot\frac{1}{3}\)
\(< =>\frac{2}{21}\)
\(3,\frac{19}{4}\cdot\frac{15}{23}-\frac{15}{4}\cdot\frac{7}{23}+\frac{15}{4}\cdot\frac{11}{23}\)
\(< =>\frac{285}{92}-\frac{105}{92}+\frac{165}{92}\)
\(< =>\frac{15}{4}\)
\(4\left(x-5\right)-23=24\cdot3\)
\(4\left(x-5\right)-23=72\)
\(4\left(x-5\right)=72+23\)
\(4\left(x-5\right)=95\)
\(x-5=\dfrac{95}{4}\)
\(x=\dfrac{95}{4}+5\)
\(x=\dfrac{115}{4}\)
\(4(x–5)-23=24.3\)
\(4(x–5)-23=72\)
\(4(x–5)=72+23\)
\(4(x-5)=95\)
\(x-5=95:4\)
\(x-5=23,75\)
\(x=23,75+5\)
\(x=28,75\)