104=(7x+30)+(9x+42)

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Solution for 104=(7x+30)+(9x+42) equation:


Simplifying
104 = (7x + 30) + (9x + 42)

Reorder the terms:
104 = (30 + 7x) + (9x + 42)

Remove parenthesis around (30 + 7x)
104 = 30 + 7x + (9x + 42)

Reorder the terms:
104 = 30 + 7x + (42 + 9x)

Remove parenthesis around (42 + 9x)
104 = 30 + 7x + 42 + 9x

Reorder the terms:
104 = 30 + 42 + 7x + 9x

Combine like terms: 30 + 42 = 72
104 = 72 + 7x + 9x

Combine like terms: 7x + 9x = 16x
104 = 72 + 16x

Solving
104 = 72 + 16x

Solving for variable 'x'.

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

Add '-16x' to each side of the equation.
104 + -16x = 72 + 16x + -16x

Combine like terms: 16x + -16x = 0
104 + -16x = 72 + 0
104 + -16x = 72

Add '-104' to each side of the equation.
104 + -104 + -16x = 72 + -104

Combine like terms: 104 + -104 = 0
0 + -16x = 72 + -104
-16x = 72 + -104

Combine like terms: 72 + -104 = -32
-16x = -32

Divide each side by '-16'.
x = 2

Simplifying
x = 2

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