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3/2x-7/2=6-2/5x
3/2x+2/5=6+7/2
15/10x+4/10x=12/2+7/2
19/10x=19/2
x=19/2 . 10/19
x=5
3/2x-7/2 = 6- 2/5x
3/2x + 2/5x =6 + 7/2
19/10x = 19/2
x = (19/2) : (19/10)
x = 5
1/2 (3x-7) = 1/2 [3( 5) - 7]
= 1/2 [15-7]
= 1/2 (8)
= 4
maka nilai a =4
sehingga a+2 = 4+2 = 6