Question 151632
# 1


{{{ 1-Ax-B=0}}} Start with the given equation.



{{{ 1-Ax=B}}} Add B to both sides.



{{{ -Ax=B-1}}} Subtract 1 from both sides.



{{{ x=(B-1)/(-A)}}} Divide both sides by {{{-A}}}.



{{{ x=(1-B)/(A)}}} Simplify.



<hr>



# 2


{{{3/(x+2)=5}}} Start with the given equation.



{{{3=5(x+2)}}} Multiply both sides by {{{x+2}}}



{{{3=5x+10}}} Distribute.



{{{0=5x+10-3}}} Subtract {{{3}}} from both sides.



{{{-5x=10-3}}} Subtract {{{5x}}} from both sides.



{{{-5x=7}}} Combine like terms on the right side.



{{{x=(7)/(-5)}}} Divide both sides by {{{-5}}} to isolate {{{x}}}.



{{{x=-7/5}}} Reduce.



----------------------------------------------------------------------


Answer:


So the answer is {{{x=-7/5}}} 



Which approximates to {{{x=-1.4}}}