Question 252209


{{{30-7z=10z-4}}} Start with the given equation.



{{{-7z=10z-4-30}}} Subtract {{{30}}} from both sides.



{{{-7z-10z=-4-30}}} Subtract {{{10z}}} from both sides.



{{{-17z=-4-30}}} Combine like terms on the left side.



{{{-17z=-34}}} Combine like terms on the right side.



{{{z=(-34)/(-17)}}} Divide both sides by {{{-17}}} to isolate {{{z}}}.



{{{z=2}}} Reduce.



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Answer:


So the solution is {{{z=2}}}