Question

If x is the root of the equation 4x=12, then the value of 3x-9
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Answer 1

Answer:

4x=12

x=12/4

x=3

put x=3

3×3-9

9-9

0 is the value

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Answer 2

4x=12
X=3
Then put in
3x-9
9-9
0
Hope it helps you plz mark as brilliant answer