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7x - 25 = 24
7x = 24 + 25
7x = 49
x = 49/7
x = 7 ( D )
= √625-49
= √576
AC= 24
nilai x
7x-25= 24
7x = 24+25
7x= 49
x = 49:7
x= 7
jadi, nilai x nya adalah 7 cm (D)