4x-9=7+12

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Solution for 4x-9=7+12 equation: 


Simplifying
4x + -9 = 7 + 12

Reorder the terms:
-9 + 4x = 7 + 12

Combine like terms: 7 + 12 = 19
-9 + 4x = 19

Solving
-9 + 4x = 19

Solving for variable 'x'.

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

Add '9' to each side of the equation.
-9 + 9 + 4x = 19 + 9

Combine like terms: -9 + 9 = 0
0 + 4x = 19 + 9
4x = 19 + 9

Combine like terms: 19 + 9 = 28
4x = 28

Divide each side by '4'.
x = 7

Simplifying
x = 7

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