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.
Since 9z is a multiple of 3z, it is automatically the LCM.
If 3z/2 = 9 then the value of z is 6
Ex. 5x-2y+3z-2x-y+4z Alright so this is how i do it: I circle all the ones that have the x as variables and are like terms. (you don't have to do this, but i find it helps and makes it go faster) So i would have circled 5x and -2x because the sign in front of the term is with the term. Then i would have added together the two terms and that would end up being 3x because 5x plus -2x is 3x. and i write 3x down below. then i would have gone to the next thing in the problem which would be the y's. -2y and -y. when added together it is -3y. so i write -3y below with 3x so it should be 3x-3y. Then i go to the z's. 3z and 4z. 3z+4z is 7z. so i write that below. so far it should be: 3x-3y+7z because 7z is positive. And that is your final answer because you can't simplify any more because they are not like terms.
8x + 5z - 4x + 3z + 6 = 8x - 4x + 5z + 3z - 6 = 4x + 8z - 6
33z - 4 - 20z - 5 simplified would be 13z - 1.
The expression written in the question is the rational expression.
3y+2z
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.
help me .. .
6
(3z + 5)(z -7)
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.
3z-5
It is an algebraic expression that can be simplified to: 16z+11
-47 + 6z = 3z-2-3z -3z-47 + 3z = -2+47 +473z = 45/3 /3z = 15
15 = 3z - 6 15 + 6 = 3z 3z = 21 z = 7