Answer:
x = 2/3
Explanation:
Lets solve your equation step-by-step. 
x−10=−2(x+4) 
Step 1: Simplify both sides of the equation. 
x−10=−2(x+4) 
x+−10=(−2)(x)+(−2)(4)(Distribute) 
x+−10=−2x+−8 
x−10=−2x−8 
Step 2: Add 2x to both sides. 
x−10+2x=−2x−8+2x 
3x−10=−8 
Step 3: Add 10 to both sides. 
3x−10+10=−8+10 
3x=2 
Step 4: Divide both sides by 3. 
3x / 3 = 2/3
x=2/3