(5z + 9)(3z - 2)
Add together like terms: 8z-3y
Expand: 8z-4-5z Collect like terms: 3z-4
if: r = 5z 15z = 3y then: z = y/5 r = 5(y/5) r = y
10 z's.
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-8z + 5z = -3z
9z-5z = 30+z 3z = 30 z = 10
8x + 5z - 4x + 3z + 6 = 8x - 4x + 5z + 3z - 6 = 4x + 8z - 6
3z + 8 + 2z + 6 = 5z + 14
(5z + 9)(3z - 2)
It can be simplified to: 978z+33
Add like terms to like: (2z - 20) + (3z + 5) = (2z + 3z) + (-20 + 5) = 5z - 15 2z is shorthand for z+z, 3z is shorthand for z+z+z, so: 2z + 3z = (z+z) + (z+z+z) = z+z+z+z+z = 5z Or, to put it another way, just add the coefficients: 2z + 3z = (2+3)z = 5z.
Add together like terms: 8z-3y
We can simplify this expression by combining the like terms. Here the likes terms are the z's and the x's.2z + 3z + 5z = 10z. (If we have 2 of something and add three of the same thing and then 5 of the same thing we will end up with 10 of that thing).Likewise we can combine the x's.6x - 2x = 4x. (You could think of this as 6x + - 2x if this helps with the idea of "combining".)Therefore we are able to simplify this expression as:2z + 3z + 5z + 4 + 6x - 2x = 10z + 4 + 4x.
Dont trip B****
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