Question 13368
The $125 selling price of a VCR is $106 less than 3 times the cost of producing the VCR. Find the cost of producing the VCR

125=3x-106; add 106 to both sides; 125+106=3x-106+106

231=3x; divide 3 from both sides;
{{{231/3=3x/3}}}
77=x

check:
125=3(77)-106
125=231-106
125=125

Hope this helps
=)