150-350:5×2
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-150-5.|x-2|=-350
5.|x-2|=-150-(-350)=200
|x-2|=200:5=40
TH1: x - 2= 40
x=42
TH2: x - 2 = -40
x= -38
b) 5 x ( 300 : y ) - 150 = 350
5 x ( 300 : y ) = 500
300 : y = 100
y = 3.
Vậy y = 3.
5x(300:y)-150=350
=>5x(300:y)=350+150=500
=>300:y=500:5=100
=>y=300:100=3
Vậy y=3
\(25\frac{2}{13}-\left(\frac{15}{17}+15\frac{2}{3}\right)=\frac{327}{13}-\left(\frac{15}{17}+\frac{47}{3}\right)\)
\(=\frac{327}{13}-\frac{844}{51}\)
\(=\frac{5705}{663}\)
\(\frac{5}{30}+\frac{15}{90}+\frac{250}{150}+\frac{350}{210}+\frac{45}{270}=\frac{1}{6}+\frac{1}{6}+\frac{5}{3}+\frac{5}{3}+\frac{1}{6}\)
\(=\frac{3}{6}+\frac{10}{3}\)
\(=\frac{1}{2}+\frac{10}{3}\)
\(=\frac{23}{6}\)
\(3\frac{1}{11}.\frac{27}{46}.1\frac{6}{17}.2\frac{4}{9}=\frac{34}{11}.\frac{27}{46}.\frac{23}{17}.\frac{22}{9}\)
\(=\frac{68}{9}.\frac{27}{34}\)
\(=6\)
`150-350:5xx2=150-70xx2=150-140=10`
\(150-350:5\times2\)
\(=150-70\times2\)
\(=150-140\)
\(=10\)