Operasi Bentuk Aljabar Penjumlahan

ax + bx = (a+b)x
ax + b + cx + d = (a+c)x + (b+d)
contoh:

1. 7x + 3x = ?
2. -2 x2 - 3 x2= ?
3. 2 x2 -3 + x2 - 4 = ?
Jawab :
1. 7x + 3x = (7+3)x = 10x
2. -2 x2 - 3 x2= (-2-3) x2 = -5 x2
3. 2 x2 -3 + x2 - 4 = (2+1) x2 + (-3-4) = 3 x2 - 7