6z + 28 = 12z + 10 18 = 6z 3 = z
-3z+17+12z = 11 9z = -6 z = -2/3
6z+28=12z+10 6z-12z=10-28 addition property of equality. -6z=-18 simplification z=3 multiplication property of equality.
12z-5 = -41 12z = -41+5 12z = -36 z = -3
104
-3
285
What do 6, 9 and 12 have in common? 3. -6y / 3 = -2y +9x / 3 = +3x +12z / 3 = +4z Since they share 3, write 3 outside the brackets, and your solutions inside the brackets: 3(3x-2y+12z)
What do 6, 9 and 12 have in common? 3. -6y / 3 = -2y +9x / 3 = +3x +12z / 3 = +4z Since they share 3, write 3 outside the brackets, and your solutions inside the brackets: 3(3x-2y+12z)
73
16(2z-3)
When the sum of a number plus 3 is squared, it is 11 more than the sum of the number plus 2 when squared.