Solve for z
z=-\frac{2}{115}\approx -0.017391304
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25z-4=64\times 4z-z
Add -8 and 4 to get -4.
25z-4=256z-z
Multiply 64 and 4 to get 256.
25z-4=255z
Combine 256z and -z to get 255z.
25z-4-255z=0
Subtract 255z from both sides.
-230z-4=0
Combine 25z and -255z to get -230z.
-230z=4
Add 4 to both sides. Anything plus zero gives itself.
z=\frac{4}{-230}
Divide both sides by -230.
z=-\frac{2}{115}
Reduce the fraction \frac{4}{-230} to lowest terms by extracting and canceling out 2.
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