Question

cần gấp nha giúp mik nha 

Answer 1

a)\(=1,25\cdot35,1-35,1\cdot\dfrac{1}{4}=35,1\cdot\left(1,25-\dfrac{1}{4}\right)\)

   \(=35,1\cdot\left(\dfrac{5}{4}-\dfrac{1}{4}\right)=35,1\)

b)\(=-62-\dfrac{9}{5}+3,1\cdot\left(27-5,2\right)\)

   \(=-62-\dfrac{9}{5}+3,1\cdot\dfrac{109}{5}=\dfrac{189}{50}=3,78\)

c)\(=11,44+12,56-1+64=87\)

d)\(=2,5\cdot\left(-1,4+14,4\right)+2,1=2,5\cdot13+2,1=34,6\)

e)\(=11,44+12,56-30,05+9=2,95\)