20z-18z=-4z

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Solution for 20z-18z=-4z equation: 



20z-18z=-4z

We move all terms to the left:

20z-18z-(-4z)=0

We add all the numbers together, and all the variables

2z-(-4z)=0

We get rid of parentheses

2z+4z=0

We add all the numbers together, and all the variables

6z=0

z=0/6

z=0

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