(2x+5)+(x+7)=75

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Solution for (2x+5)+(x+7)=75 equation:


Simplifying
(2x + 5) + (x + 7) = 75

Reorder the terms:
(5 + 2x) + (x + 7) = 75

Remove parenthesis around (5 + 2x)
5 + 2x + (x + 7) = 75

Reorder the terms:
5 + 2x + (7 + x) = 75

Remove parenthesis around (7 + x)
5 + 2x + 7 + x = 75

Reorder the terms:
5 + 7 + 2x + x = 75

Combine like terms: 5 + 7 = 12
12 + 2x + x = 75

Combine like terms: 2x + x = 3x
12 + 3x = 75

Solving
12 + 3x = 75

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 + 3x = 75 + -12

Combine like terms: 12 + -12 = 0
0 + 3x = 75 + -12
3x = 75 + -12

Combine like terms: 75 + -12 = 63
3x = 63

Divide each side by '3'.
x = 21

Simplifying
x = 21

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