Jawabanmu

2014-08-21T12:25:25+07:00
1) 5a-3a+4a
 = 2a+4a
= 6a
2) 3y2 -4y+5x-2y+2x
= 5x+2x,4y-2y
=7x + 6y
2014-08-21T12:26:03+07:00
1) 5a - 3a + 4a = (5 - 3 + 4)a = 6a
2) 3y² - 4y + 5x - 2y + 2x
     = 3y² - (4 + 2)y + (5 + 2)x = 3y² - 6y +7x

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