Respuesta :
Answer:
the solution is all real numbers
Step-by-step explanation:
12(x+3)=4(2x+9)+4x
distribute
12*x + 12*3 = 4*2x + 4*9 + 4x
simplify
12x+36 = 8x +36 + 4x
combine like terms
12x + 36 = 12x + 36
subtract 12x from each side
12x -12x +36 = 12x -12x + 36
36 =36
this is always true
it does not matter what value I put in for x in the original equation, it will always be true
the solution is all real numbers
Answer: x=1
Step-by-step explanation:
• Substitute, so 12x+36 = 8x+36+4x
• Add 8x and 4x
• 12x+36 = 12x+36
Right away you can tell that they will equal each other if you plug in 1, then check your answer by plugging 1 into x