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Matematika VIII SMP
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Pembahasan :
4 + 3(1/2 - x/4) = 2/3x - 3
7 + 3(2/4 - x/4) = 2/3x
7 + 3[(2 - x)/4] = 2/3x
7 + (6 - 3x)/4 = 2/3x
28 + (6 - 3x) = 8/3x
34 - 3x = 8/3x
102 - 9x = 8x
8x + 9x = 102
17x = 102
x = 6

[tex]4+3( \frac{1}{2}- \frac{x}{4}) = \frac{2}{3}x-3 \\ 4+ \frac{3}{2}- \frac{3}{4}x= \frac{2}{3} x - 3 \\ -\frac{17}{12}x= -\frac{17}{2} \\ x=6 [/tex]