Question

Repede va rog frumos!☺
Dau coroana!

Answer 1

t+f=53 ani
f=t-31
-------------
t=?f=?

f+31+f=53
2f+31=53
2f=53-31
2f=22
f=22:2
f=11 ani ( are fiul)
t=11+31
t=42 ani ( are tatal)

Vreificare

42+11=53 ani

-----------------------------

e+r=7349 kg
e=r+2363
----------------
e=?r=?

r+2363+r=7349
2r+2363=7349
2r=7349-2363
2r=4986
r=4986:2
r=2493 kg.( are rinocerul)
e=2493+2363
e=4856 kg.( are elefantul)

verificare

4856+2494=7349 kg.( impreuna9