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x = 11 - 3 = 8
2. 25 - x = 7 + 8
25 - 15 = x
x = 10
misalkan:
suatu bilangan = x
maka,
x + 3 = 11
x = 11 - 3
x = 8
jadi bilangan itu adalah 8
6.)
25 - x = 7 + 8
25 - x = 15
25 - 15 = x
10 = x
jadi nilai x adalah 10
"maaf kalau salah"