Identify the linear equations of the following.
a) x + 7 = 12
b) 2x + 19 = 29
d) x2 + 7 = 23
e) y - 9 = 27
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x^2 +7 = 23 is the only equation is the only equation which is not a linear equation. Linear equations are equations that have the highest power of 1. meaning that the highest exponential power a variable like x or y can have is 1. Not more than that.
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