Răspuns :
a+ b+ c=60
b=3 a
c=2 (a+ b)
c=2( a+3 a)
c=2×4 a=8 a
a+3 a+8 a=60
12 a=60
a=60:12=5
b=3×5=15
c=8×5=40
b=3 a
c=2 (a+ b)
c=2( a+3 a)
c=2×4 a=8 a
a+3 a+8 a=60
12 a=60
a=60:12=5
b=3×5=15
c=8×5=40
x+y+z=60
y=3x
z=2×(x+y)
2×(x+3x)
2×4x=8x
x+3x+8x=60
12x=60
x=60÷12
40x=5
y=15
z=
y=3x
z=2×(x+y)
2×(x+3x)
2×4x=8x
x+3x+8x=60
12x=60
x=60÷12
40x=5
y=15
z=