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8 x 2.019 x 125 - 250 x 2.018 x 4
= (8 x 125) x 2.019 - (250 x 4) x 2.018
= 1.000 x 2.019 - 1.000 x 2.018
=2.019.000 - 2.018.000
= 1.000
nhớ tick nhe
\(\dfrac{14}{9}\) x \(\dfrac{11}{8}-\dfrac{3}{8}\) x \(\dfrac{14}{9}\)
\(=\dfrac{14}{9}\) x \(\left(\dfrac{11}{8}-\dfrac{3}{8}\right)\)
\(=\dfrac{14}{9}\) x \(\dfrac{8}{8}=\dfrac{14}{9}\) x \(1\)
\(=\dfrac{14}{9}\)
376 x 29 + 70 x 376 + 376
= 376 x 29 + 70 x 376 + 376 x 1
= 376 x (29 + 70 + 1)
= 376 x 100
= 37600
Sửa đề:
376 × 29 + 70 × 376 + 376
= 376 × (29 + 70 + 1)
= 376 × 100
= 37600
\(a,x+\dfrac{3}{7}=\dfrac{2}{5}+\dfrac{3}{10}\)
\(x+\dfrac{3}{7}=\dfrac{4}{10}+\dfrac{3}{10}\)
\(x+\dfrac{3}{7}=\dfrac{7}{10}\)
\(x=\dfrac{7}{10}-\dfrac{3}{7}\)
\(x=\dfrac{49}{70}-\dfrac{30}{70}\)
\(x=\dfrac{19}{70}\)
\(b,\dfrac{19}{20}-x=\dfrac{8}{5}-\dfrac{3}{4}\)
\(\dfrac{19}{20}-x=\dfrac{32}{20}-\dfrac{15}{20}\)
\(\dfrac{19}{20}-x=\dfrac{17}{20}\)
\(x=\dfrac{19}{20}-\dfrac{17}{20}\)
\(x=\dfrac{2}{20}\)
\(x=\dfrac{1}{10}\)
#Urushi☕
=(8*125)*2019-(125*4)*2018
=1000*2019-1000*2018
=1000*(2019-2018)=1000*1=1000
8 x 2019 x125 - 250 x 2018 x 4
= ( 8x 125) - ( 250x 4)x 125
=1000-1000 x 125
0 x 125
= 0
mk chẳng bt đúng ko nữa