6x is the numerator
9z is the denominator
The numerator is the number on the top of the fraction and the denominator in the number on the bottom of the fraction.
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8x + 9z
9z+8 = 3z-10 9z-3z = -10-8 6z = -18 z = -3
well you should start with 9z + 10 = 145 then balance the equation by collecting like terms 9z = 145 - 10 solve 9z = 135 then divide both sides by the number next to the variable. (in this case 9) so 9z/9 = 135/9 solve z = 15
-y+9z-16y-25z= -y-19y+9z-25z= -20y-16z There you go, are you happy. p.s it was easy (im 13yr)
The following steps lead you to the correct answer: 9z = 5z + 16 9z - 5z = 16 4z = 16 z = 4, thus the correct answer is z = 4