Question

A+b+c=1600
b=200+c
a=b+c​

Answer 1

a=200+c+c
=>200+c+c+200+c+c=1600
4c=1600-200-200
4c=1200
C=300
a=800
b=500

Answer 2

Răspuns:

a=b+c

a=200+2c

a+b+c=1600

200+2c+200+c+c=1600

400+4c=1600

4c=1600-400

4c=1200

c=1200:4

c=300

b=200+300=500

a=500+300=800

800+500+300=1600