winnie45
07.05.2020 •
Mathematics
Which equation is an identity?
3(x - 1) = x + 2(x + 1) + 1
x-4x + 1) = -3(x + 1) + 1
2x+3 = 2(4x + 2) + 2
(6x – 3) = 3(x + 1) - x-2
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