Jawaban:
1. (5x-4)+(3x-6)
5x-4+3x-6
5x+3x-4-6
8x-10
2. (2x+9)+(4x-3)
2x+9+4x-3
2x+4x+9-3
6x+6
3. (3a+5)+(-2a+8)
3a+5-2a+8
3a-2a+5+8
a+13
4.(-7a-1)+(a+4)
-7a-1+a+4
-7a-1+a-1+4
-6a+4
5. (-7+5x)+(2-5x)
-7+5x+2-5x
-7+2+5x-5x
-5+0
-5
6. (3/5x-2/3)+(2/5x+1/3)
3/5x-2/3+2/5x+1/3
3/5x+2/5x-2/3+1/3
5/5x-3/3
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Jawaban:
1. (5x-4)+(3x-6)
5x-4+3x-6
5x+3x-4-6
8x-10
2. (2x+9)+(4x-3)
2x+9+4x-3
2x+4x+9-3
6x+6
3. (3a+5)+(-2a+8)
3a+5-2a+8
3a-2a+5+8
a+13
4.(-7a-1)+(a+4)
-7a-1+a+4
-7a-1+a-1+4
-6a+4
5. (-7+5x)+(2-5x)
-7+5x+2-5x
-7+2+5x-5x
-5+0
-5
6. (3/5x-2/3)+(2/5x+1/3)
3/5x-2/3+2/5x+1/3
3/5x+2/5x-2/3+1/3
5/5x-3/3