-4z+21=-z

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Solution for -4z+21=-z equation:


-4z+21=-z

We simplify the equation to the form, which is simple to understand 
-4z+21=-z

We move all terms containing z to the left and all other terms to the right. 
-4z+1z=-21

We simplify left and right side of the equation. 
-3z=-21

We divide both sides of the equation by -3 to get z. 
z=7

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