Answer:
x = 15
Explanation:
Substitute: -4/5x + 7 = -5 
Rearrange unknown terms to the left side of the equation: -4/5x = -5 - 7 
Calculate the sum or difference: -4/5x = -12 
Divide both sides of the equation by the coefficient of variable: x = -12 × (-5/4) 
Remove the parentheses: x = 12 × 5/4 
Cross out the common factor: x = 3 × 5 
Calculate the product or quotient: x = 15 
So the answer is: x = 15