7x+30=2x+100

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Solution for 7x+30=2x+100 equation:


Simplifying
7x + 30 = 2x + 100

Reorder the terms:
30 + 7x = 2x + 100

Reorder the terms:
30 + 7x = 100 + 2x

Solving
30 + 7x = 100 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
30 + 7x + -2x = 100 + 2x + -2x

Combine like terms: 7x + -2x = 5x
30 + 5x = 100 + 2x + -2x

Combine like terms: 2x + -2x = 0
30 + 5x = 100 + 0
30 + 5x = 100

Add '-30' to each side of the equation.
30 + -30 + 5x = 100 + -30

Combine like terms: 30 + -30 = 0
0 + 5x = 100 + -30
5x = 100 + -30

Combine like terms: 100 + -30 = 70
5x = 70

Divide each side by '5'.
x = 14

Simplifying
x = 14

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