Question

scrie nr 187 254 450 si 698 ca suma adoua nr naturale ca suma atrei nr naturale si ca diferenta de doua nr naturale

Answer 1

x+y=z
x=187+254
y=450+698
----------------
z=?

(187+254)+(450+698)=z
z=441+1148
z=1589

x+y+z=m
x=187+254
y=450
z=698
----------------
m=?

(187+254)+450+698=m
m=441+450+698
m=891+698
m=1589

x-y=z
x=698-187
y=450-254
---------------
z=?

(698-187)-(450-254)=z
z=511-196
z=315