Question 223944
{{{-7a-9=6 }}}


Add  7a-6 to both sides of the equation


{{{-7a-9+7a-6=6+7a-6}}}


{{{-15=7a}}}


Divide 7 to both sides of the equation


{{{-15/7=7a/7}}}


{{{a=-15/7}}}


Also solve


{{{5x+14=-x}}}


Subtract 5x from both sides of the equation


{{{5x+14-5x=-x-5x}}}


{{{14=-6x}}}


Divide -6 to both sides of the equation


{{{14/-6=-6x/-6}}}


{{{x=-14/6=-7/3}}}


I hope the above steps were helpful.


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Good luck in your studies!


Respectfully,
Dr J