12x + 6
2 (2x+1)
3/5 x + 2/10 x
8/10x = 4/5x
15x - 35y + 25
5( 3x - 7y +5)
8y +12z -2y +4z
6y +16z = 2 (3y +8z)
35h - 28p + 15h + 3p
50h - 25p = 25(2h-p)
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