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\(\frac{9}{5}=\frac{18}{10}=1,8\)
\(\frac{2}{25}=\frac{8}{100}=0,08\)
\(\frac{111}{125}=\frac{888}{1000}=0.888\)
\(\frac{23}{8}=\frac{2875}{1000}=2,875\)
\(\frac{76}{4}=\frac{1900}{100}=19\)
\(\frac{9}{5}=\frac{18}{10}=1,8\)
\(\frac{2}{25}=\frac{8}{100}=0,08\)
\(\frac{111}{125}=\frac{111.8}{125.8}=\frac{888}{1000}=0,888\)
\(\frac{76}{4}=19\)
\(\frac{23}{8}=\frac{23.125}{8.125}=\frac{2875}{1000}=2,875\)
\(\frac{42}{25}=\frac{42.4}{25.4}=\frac{168}{100}=1,68\)
\(\frac{370}{50}=\frac{37}{5}=\frac{37.2}{5.2}=\frac{74}{10}=7,4\)
2/25=4/50=0,08
111/125=222/250=0,888
23/8=46/16=2,875 76/4=152/8=19 42/25=84/50=1,68 370/50=740/100=7,4
2/25=4/50=0,08
111/125=222/250=0,888
23/8=46/16=2,875 76/4=152/8=19 42/25=84/50=1,68 370/50=740/100=7,4
2/25=8/100=0,08
111/125=888/1000=0,888
23/8=2875/1000=2,875
76/4=1900/100=19
42/25=168/100=1,68
370/50=740/100=7,4
2/25=8/100=0,8
111/125=888/1000=0,888
23/8=2875/1000=2,875
76/4=1900/100=1,9
42/25=168/100=1,68
370/50=740/100=7,4
\(1) 420+65.4=(x+175):5+30\)
\(\implies 420+260=(x+175):5+30\)
\(\implies 680=(x+175):5+30\)
\(\implies 650=(x+175):5\)
\(\implies 650.5-175=x\)
\(\implies 3075=x\)
\(2)x-4867=(175.2050.70):25+23\)
\(\implies x-4867=1004500+23\)
\(\implies x-4867=1004523\)
\(\implies x=1009390\)
\(3) 134-[(96-7x):4-2]=126\)
\(\implies (96-7x):4-2=8\)
\(\implies(96-7x):4=10\)
\(\implies 96-7x=40\)
\(\implies 7x=56\)
\(\implies x=8\)
\(4) 4-\{100-[(100-5x):8-5]:10\}:25=0\)
\(\implies 4-\{100-[(100-5x):8-5]:10\}=0\)
\(\implies 100-[(100-5x):8-5]:10=4\)
\(\implies 100-[(100-5x):8-5]=40\)
\(\implies (100-5x):8-5=60\)
\(\implies (100-5x):8=65\)
\(\implies 100-5x=520\)
\(\implies 5x=-420\)
\(\implies x=-84\)
~ Hok tốt a~
\(\dfrac{9}{5}=\dfrac{18}{10}=1,8\)
\(\dfrac{2}{25}=\dfrac{8}{100}=0,08\)
\(\dfrac{23}{8}=\dfrac{2875}{1000}=2,875\)
\(\dfrac{76}{4}=\dfrac{1900}{100}=19\)
\(\dfrac{42}{25}=\dfrac{168}{100}=1,68\)
9/5 =18/10=1,8
2/25 =8/100=0,08
23/8 =2874/1000=2,874
76/4 =1900/100=19
42/25 =168/100=1,68