Question 689798
{{{7b+3-4b=3-3(b+4)}}} Start with the given equation.



{{{7b+3-4b=3-3b-12}}} Distribute.



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



{{{3b+3=-3b-9}}} Combine like terms on the right side.



{{{3b=-3b-9-3}}} Subtract {{{3}}} from both sides.



{{{3b+3b=-9-3}}} Add {{{3b}}} to both sides.



{{{6b=-9-3}}} Combine like terms on the left side.



{{{6b=-12}}} Combine like terms on the right side.



{{{b=(-12)/(6)}}} Divide both sides by {{{6}}} to isolate {{{b}}}.



{{{b=-2}}} Reduce.



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Answer:


So the solution is {{{b=-2}}}