 Mathematics
2 April, 03:39

# How do you solve 12 (x+3) = 4 (2x+9) + 4x

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Answers (2)
1. 2 April, 04:11
0
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
2. 2 April, 05:37
0
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
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