3[m-1.2]=9

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Solution for 3[m-1.2]=9 equation: 


Simplifying
3[m + -1.2] = 9

Reorder the terms:
3[-1.2 + m] = 9
[-1.2 * 3 + m * 3] = 9
[-3.6 + 3m] = 9

Solving
-3.6 + 3m = 9

Solving for variable 'm'.

Move all terms containing m to the left, all other terms to the right.

Add '3.6' to each side of the equation.
-3.6 + 3.6 + 3m = 9 + 3.6

Combine like terms: -3.6 + 3.6 = 0.0
0.0 + 3m = 9 + 3.6
3m = 9 + 3.6

Combine like terms: 9 + 3.6 = 12.6
3m = 12.6

Divide each side by '3'.
m = 4.2

Simplifying
m = 4.2

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