Question 88953
{{{10x+7=12x-13}}}
Get the x terms together on one side of the equation:
{{{10x-12x+7=-13}}}
Get the x terms alone on one side of the equation and simplify a bit:
{{{-2x=-20}}}
Solve for x:
{{{highlight(x=10)}}}
So, both your answers are wrong. Prove it to yourself by plugging the value of x back into the original equation and see if it holds true:
{{{10(10)+7=12(10)-13}}}
{{{107=107}}}
So, you know x=10 is the correct answer.
Good Luck,
tutor_paul@yahoo.com