Question

пж СРОЧНО нужно плиз ​

Answer 1

3 * (10 - 1) = 3 * 10 - 3 * 1

Answer 2

3• (10-1)=27

3•10-1•3= 27

3•10•1=30

3-10•3-1= -28

(3-10)•(3-1)= -14