Question

Resolva a equação de 4 incognitas:
y+z+w=6
z+2w+x=8
3w+x+y=10
x+y+z=9

Answer 1

Resposta:

y+z+w=6  ==>y=6-z-w ==>y=6-5+3w-w ==>y=1+2w=3

z+2w+x=8 ==>z+2w+3+w=8 ==>z=5-3w=2

3w+x+y=10 ==>3w+3+w+1+2w=10 ==>w=1

x+y+z=9  ==>x+6-z-w+z=9 ==>x=3+w ==>x=4

x=4

y=3

z=2

w=1