Question
Verify by substitution that:
The root of $3 + 2x = 9$ is $x = 3$
The root of $3 + 2x = 9$ is $x = 3$
✓
Answer
The given equation is $3 + 2x = 9$
Substituting $x = 3$, we get $L.H.S. = 3 + 2x$
$= 3 + 2 × 3$
$= 3 + 6 = 9$
$= R.H.S.$
It is verified that $x = 3$ is the root of the given equation.
Substituting $x = 3$, we get $L.H.S. = 3 + 2x$
$= 3 + 2 × 3$
$= 3 + 6 = 9$
$= R.H.S.$
It is verified that $x = 3$ is the root of the given equation.
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