25z-31z+23z-20z--21z=18

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Solution for 25z-31z+23z-20z--21z=18 equation:


25z-31z+23z-20z--21z=18

We simplify the equation to the form, which is simple to understand 
25z-31z+23z-20z+21z=18

We move all terms containing z to the left and all other terms to the right. 
+25z-31z+23z-20z+21z=+18

We simplify left and right side of the equation. 
+18z=+18

We divide both sides of the equation by 18 to get z. 
z=1

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