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Mathematics, 20.11.2020 19:20 brysong19

Elena began to solve this equation: 12x + 6(4x + 3) =2(6x + 4) – 2

3
12x + 6(4x + 3) = 3(2(6x + 4) - 2)
12x + 6(4x + 3) = 6(6x+ 4) – 6
12x + 24x + 18 = 36x + 24 - 6

When she got to the last line she stopped and said the equation is true for all values of x. How could Elena tell?

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Elena began to solve this equation: 12x + 6(4x + 3) =2(6x + 4) – 2

3
12x + 6(4x +...
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