The value of x is 4. The steps to solving the equation are to use distributive property first so that the equation then looks like this: 10x+20=5x+40
Next you would combine like terms and then the equation would look like this: 5x+20=40
Then you would use the subtraction property of equality to subtract 20 from 40 so your equation will now look like this: 5x=20
Then you use the division property of equality to divide 20 by 5 to get x=4
Answer:
1) Answer: 3) 
2) Answer: 3) 2 and -6
Step-by-step explanation:
1)



Answer: 
2)





or 
or 
Answer: x = 2 or x = -6
Divide 100 to 56 = 56/100= 0.56 then you wanna times it by 50 so then it would be.56x50=28
Number 5) A hill that rises 2 feet for every 10 feet of run. Because a longer run is not as steep as a short run.
Number 6) They all are parallel, they do not intersect.
Answer:
work is shown and pictured