Question 262544
It appears that (*) is an operator.
x*5 = 4x - 2(5) = 4x - 10
3*4 = 4(3) - 2(4) = 4
So,
{{{4x-10 = 4}}}
add 10 to get
 {{{4x = 14}}}
divide by 4 to get
{{{x = 7/2}}}