Question

 giúp mik vs mik cần gấp

a)7,2x111+3,6x2x890+1,8x4x999

b)1999,1999-(-2001,2001)

Answer 1

a: \(=7.2\cdot111+7.2\cdot890+7.2\cdot999=7.2\left(111+999+890\right)=7.2\cdot2000=14400\)

b: =1999,1999+2001,2001

=4000,4