Question

a+b=100
a=3b
care sunt nrn?

Answer 1

a+b=100 
a=3b 
3b+b=100 
4b=100   
b=100:4 
b=25 
a=3*25   
a=75

Answer 2

a+b = 100 ; a= 3b; a= 3 segmente si b= 1 segment;
100 : 4 = 25; a = 3 x 25 = 75; b= 1 x 25 = 25