Answer:
x = 78 /5
Explanation:
5(x+4)=12-40-7x
Subtract the numbers from the left side which will equal -25-7x
Then... Distribute the -5 to x and 4 making the equation on the left
-5x -20
In all your equation should look like this
-5x -20 = -25 -7x
Then add 7x to the right side and add 20 to the left making the equation
-5x + 7x = -28 + 20
The add up the terms on each side...
2x = -8
Then divide the 2 to the left side...
Overall:
x= -4