3x+5+4x+7=19

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Solution for 3x+5+4x+7=19 equation:


Simplifying
3x + 5 + 4x + 7 = 19

Reorder the terms:
5 + 7 + 3x + 4x = 19

Combine like terms: 5 + 7 = 12
12 + 3x + 4x = 19

Combine like terms: 3x + 4x = 7x
12 + 7x = 19

Solving
12 + 7x = 19

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -12 + 7x = 19 + -12

Combine like terms: 12 + -12 = 0
0 + 7x = 19 + -12
7x = 19 + -12

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

Divide each side by '7'.
x = 1

Simplifying
x = 1

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