2(5x − 20) − (15 + 8x) = 7
What value of x satisfies the equation above?

The correct answer is: 31

given
2(5x – 20) – (15 + 8x) = 7
Clear the break off gives
10x – 40 – 15 – 8x = 7
2x – 55 = 7
2x = 7 + 55
2x – 62 = x =  = 31
To get the value of x divide both side by 2 gives
x = 31.