Answer:
x = 

Explanation:
Since you cannot subtract -1 from 4x, you multiply 2 × 4x = 8x
Now, you have 8x - 1 + 3 = 7
Seperate the 8x from the other numbers
8x = 1 - 3 + 7 ---> 6
8x = 6
Now simplify 
x = 
 <----- to reduce, divide the numerator and denominator by 2
Hence, 
x = 
