Question

solve by trial and error method 2x-15=x+6​

Answer 1

2x+15 = 29

or, 2x = 29 - 15

or, 2x = 14

or, x = 14/2

or, x = 7

Answer 2

$2x - 15 = x + 6$

$2x - x = 15 + 6$

$x = 21$

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