Question

Diketahui x : y : z = 2 : 6 : 5 dan 4x + 3y - 2z = 80. hitunglah selisih nilai x & z

Answer 1

X = 2
y = 6
z = 5
Dit : selisih x dan z ?
peny
nilai x
4x+3y-2z=80
4x+3(6)-2(5)=80
4x+18-10=80
4x+8=80
4x=80-8
4x=72
x=18
nilai z
4x+3y-2z=80
4(2)+3(6)-2z=80
8+18-2z=80
26-2z=80
-2z=80-26
-2z=54
z=-27
selisih
x - z =
18-(-27) =
18+27=45