100+.30x=80+.70x

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Solution for 100+.30x=80+.70x equation:


Simplifying
100 + 0.30x = 80 + 0.70x

Solving
100 + 0.30x = 80 + 0.70x

Solving for variable 'x'.

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

Add '-0.70x' to each side of the equation.
100 + 0.30x + -0.70x = 80 + 0.70x + -0.70x

Combine like terms: 0.30x + -0.70x = -0.4x
100 + -0.4x = 80 + 0.70x + -0.70x

Combine like terms: 0.70x + -0.70x = 0.00
100 + -0.4x = 80 + 0.00
100 + -0.4x = 80

Add '-100' to each side of the equation.
100 + -100 + -0.4x = 80 + -100

Combine like terms: 100 + -100 = 0
0 + -0.4x = 80 + -100
-0.4x = 80 + -100

Combine like terms: 80 + -100 = -20
-0.4x = -20

Divide each side by '-0.4'.
x = 50

Simplifying
x = 50

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