3x+5x+7+3+x=100

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Solution for 3x+5x+7+3+x=100 equation:


Simplifying
3x + 5x + 7 + 3 + x = 100

Reorder the terms:
7 + 3 + 3x + 5x + x = 100

Combine like terms: 7 + 3 = 10
10 + 3x + 5x + x = 100

Combine like terms: 3x + 5x = 8x
10 + 8x + x = 100

Combine like terms: 8x + x = 9x
10 + 9x = 100

Solving
10 + 9x = 100

Solving for variable 'x'.

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

Add '-10' to each side of the equation.
10 + -10 + 9x = 100 + -10

Combine like terms: 10 + -10 = 0
0 + 9x = 100 + -10
9x = 100 + -10

Combine like terms: 100 + -10 = 90
9x = 90

Divide each side by '9'.
x = 10

Simplifying
x = 10

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