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1/4x + 1/2 = 7
1/4x = 7 - 1/2 => samakan penyebut
1/4x = 14/2 - 1/2
1/4x = 13/2 (kalikan 4 kedua ruas)
1/4x . 4 = 13/2 . 4
x = 26
2.)
1/4(3x + 7) = x - 2 1/2
3/4x + 7/4 = x - 5/2
3/4x - x = -5/2 - 7/4 (samakan penyebut)
3/4x - 4/4x = -10/4 - 7/4
-1/4x = -17/4 (kalikan 4 kedua ruas)
-1/4x . 4 = -17/4 . 4
-x = -17
x = -17/-1
x = 17
3.)
3/4(x + 4) -2/3(3/4x - x) = 1/2
3/4x + 3 - 2/3(-1/4x) = 1/2
3/4x + 3 +2/12x = 1/2
3/4x + 2/12x = 1/2 - 3
------------------------------- x 12
9x + 2x = 6 - 36
7x = -30
x = -30/7
x = -4 2/7
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