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(5x-2) + (2x+4) = 30
7x + 2 = 30
7x = 30 - 2
7x = 28
x = 28/7
x = 4
umur budi
= 5x-2
= 5(4) -2
= 20 - 2
= 18 tahun
jadi, umur budi 18 tahun
Semoga membantu :)