Question

va rog cad de repede se poate dau coroana cine raspunde orimul la ex 18 clar acum va implor .

Answer 1

3x(1+2)x4+1=3x3x4+1=36+1=37
(3x1+2)x4+1=5x4+1=20+1=21
3x(1+2x4)+1=3x9+1=27+1=28
3x(1+2x4+1)=3x(1+8+1)=3x10=30

Answer 2

3 × ( 1 + 2 ) × 4 + 1 = 37
3×3=9×4=36+1=37

( 3 × 1 + 2 )× 4 + 1 = 21
5×4+1=20+1=21

3 × ( 1 + 2 × 4 ) + 1 = 28
3 × 9 +1 = 27 + 1 = 28 

3 × ( 1 + 2 × 4 + 1 ) = 30
3 × 10 =30 

Sper ca te-am ajutat !!!!