5h4nt35t0n3
5h4nt35t0n3
29-08-2017
Mathematics
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reminder: variables are on both sides
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ivycoveredwalls
ivycoveredwalls
29-08-2017
Start by multiplying both sides of the equation by 7 (the common denominator).
[tex]7 \left(\frac{6z}{7} -27 \right)=7\left(\frac{21-4z}{7} \right) \\ 6z-189=21-4z[/tex]
Add 4z to both sides.
[tex]10z-189=21[/tex]
Add 189.
[tex]10z=210 \\ z=21[/tex]
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