Question

o portocala si o mandarina au impreuna 355g. mandarina are cu 185g mai putin decat portocala. cat cantarestefiecare fruct?calculeaza in doua moduri.

Answer 1

1 mod.....p+m=355g
m=p-185g
p-185g+p=355g
p+p=355g+185g
2p=540g
p=540g:2=270g
m=355g-270g=85g

2 mod......
p+m=355g
m=p-185g=> p=185g+m
185g+m+m=355g
2m=355g-185g=170g
m=170g:2=85g
p=355g-85g
p=270g
Sper ca te-am ajutat!