Question 737035
{{{4r+12+3r=3(4-r)}}} Start with the given equation.



{{{4r+12+3r=12-3r}}} Distribute.



{{{7r+12=12-3r}}} Combine like terms on the left side.



{{{7r=12-3r-12}}} Subtract {{{12}}} from both sides.



{{{7r+3r=12-12}}} Add {{{3r}}} to both sides.



{{{10r=12-12}}} Combine like terms on the left side.



{{{10r=0}}} Combine like terms on the right side.



{{{r=(0)/(10)}}} Divide both sides by {{{10}}} to isolate {{{r}}}.



{{{r=0}}} Reduce.



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Answer:


So the solution is {{{r=0}}}