Respuesta :
Answer:
Step-by-step explanation:
12x+36 =8x+36+4x
12x+36= 12x+36
which means any value of x will work.
4(2x + 9) +4x = 21.12(x + 3)
Simplify left side
8x + 36 + 4x = 21.12( x + 3)
Add 8x and 4x
12x + 36 = 21.12(x + 3)
Simplify 21.12(x + 3)
12x + 36 = 21.12x + 63.36
Move all terms containing x to left side of the equation
-9.12x + 36 = 63.36
-9.12x = 27.36
Divide each terms by -9.12 and simplify
x = -3 final answer
