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Hobbs
Mathematics
27 February, 21:49
How do you solve 12 (x+3) = 4 (2x+9) + 4x
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Gloria Miller
27 February, 21:58
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
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Papa
27 February, 22:09
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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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