Question

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$2x - 1 = \frac{x}{3}$
$3x + 15 = - x + 3$
$5 - 3x = 2x - 7$
$\frac{ \times + 1}{2} = \frac{2x - 1}{3}$

Answer 1

1. 2x-1=x/3
x= 3/5

2. 3x+15=-x+3
4x=-12
x= -12/4
x=-3