Jawapan

2016-09-17T14:09:09+08:00
Katakan nombor itu=x
3+3x=5x-7-3-5x
-2x=4
-x=2
x=-2
2016-09-17T14:19:00+08:00
3 + 3x = 7 - 5x
3 - 7 = -5x - 3x <tukarkan tempat 
-4 = -8x  <selesaikan  
x = -4 ÷ (-8) <cari nilai satu x
x = 0.5  <done!!

cara buktikan
3 + 3(0.5) = 7 - 5(0.5)
3 + 1.5 = 7 - 2.5
4.5 = 4.5 <samakan?

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