Question

.If x is root of the equation 4x = 12 then the value of 3x -9 is. ​

Answer 1

$4x = 12 \\ x = 12 \div 4 \\ x = 3 \\ 3x - 9 = 3(3) - 9 = 9 - 9 = 0$

Answer 2

Answer:

0

Step-by-step explanation:

4x = 12

divide 4 on both the sides

4x/4 = 12/4

x = 3

Therefore the value of x is 3

3x - 9

=3 × 3 -9

=9 - 9

=0

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