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B = { 1,2,3,4,5,6,7,8,9,10 }
C = { 3 }
D = { 1 }
sorry klo slh
x = 9 ÷ 3
x = 3
{3}
b.) {2,4,6,8,10}
c.) 3x + 7 = 10
3x = 10 - 7
3x = 3
x = 3 ÷ 3
x = 1
{1}
d.) = 1
=
= 1
y =
y = 1
{1}
kalau yang menyatakan sifat cari sendiri ya mas :D