Răspuns :
5. a. 45+19×2=45+38=83
b. 24×10-86:2=240-43=197
c. 9+9×(9:9+9:1)=9+9×10=9+90=99
b. 24×10-86:2=240-43=197
c. 9+9×(9:9+9:1)=9+9×10=9+90=99
c ) 9 + 9 x ( 9 : 9 + 9 : 1 )
9 + 9 x ( 1 + 9 )
9 + 9 x 10
9 + 90 = 99
9 + 9 x ( 1 + 9 )
9 + 9 x 10
9 + 90 = 99