0.5(300-x)+0.7x=45

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Solution for 0.5(300-x)+0.7x=45 equation:


Simplifying
0.5(300 + -1x) + 0.7x = 45
(300 * 0.5 + -1x * 0.5) + 0.7x = 45
(150 + -0.5x) + 0.7x = 45

Combine like terms: -0.5x + 0.7x = 0.2x
150 + 0.2x = 45

Solving
150 + 0.2x = 45

Solving for variable 'x'.

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

Add '-150' to each side of the equation.
150 + -150 + 0.2x = 45 + -150

Combine like terms: 150 + -150 = 0
0 + 0.2x = 45 + -150
0.2x = 45 + -150

Combine like terms: 45 + -150 = -105
0.2x = -105

Divide each side by '0.2'.
x = -525

Simplifying
x = -525

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