Question

How To Solve
$3x \: + 12 \: = \: 18$
In Linear Equation .​

Answer 1

Answer:

$x = 2$

Step-by-step explanation:

$3x + 12 = 18$

$=>x + 4 = 6$  [dividing both sides by 3]

$=>x + 4 - 4 = 6 - 4$  [subtracting 4 from both sides]

$=>x = 2$

Validation:

Putting the value of x:

L.H.S. = 3 . 2 + 12 = 6 + 12 = 18 = R.H.S.

validated that x = 2 is the correct solution to the given linear equation.

Answer 2

3x+12=18
3x=18-12
3x=6
x=6/3
x=2