26-01-2016
Mathematics

contestada

Which expression is not equivalent to
5x + 6?
A
4x + 7 + x - 1
B
3x + 3 + 2x + 3
C
5(x + 1) + 1
D
x(5 + 6)

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Аноним Аноним

26-01-2016

5x + 6

4x + 7 + x - 1 < Lets see if this one works
4x + 1 = 5x
5x + 6 << Equal

3x + 2x = 5x
5x + 6 << Equal

5(x + 1 ) + 1
5x + 5 + 1
5x + 6 << Equal

x(5+6)
5x + 6x << Not equal

Answer: D) x(5 + 6) This one is not equal.

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