0.7(x+80)+0.3x=81

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Solution for 0.7(x+80)+0.3x=81 equation:


Simplifying
0.7(x + 80) + 0.3x = 81

Reorder the terms:
0.7(80 + x) + 0.3x = 81
(80 * 0.7 + x * 0.7) + 0.3x = 81
(56 + 0.7x) + 0.3x = 81

Combine like terms: 0.7x + 0.3x = 1x
56 + 1x = 81

Solving
56 + 1x = 81

Solving for variable 'x'.

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

Add '-56' to each side of the equation.
56 + -56 + 1x = 81 + -56

Combine like terms: 56 + -56 = 0
0 + 1x = 81 + -56
1x = 81 + -56

Combine like terms: 81 + -56 = 25
1x = 25

Divide each side by '1'.
x = 25

Simplifying
x = 25

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