21=0.5(119-x)

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Solution for 21=0.5(119-x) equation:


Simplifying
21 = 0.5(119 + -1x)
21 = (119 * 0.5 + -1x * 0.5)
21 = (59.5 + -0.5x)

Solving
21 = 59.5 + -0.5x

Solving for variable 'x'.

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

Add '0.5x' to each side of the equation.
21 + 0.5x = 59.5 + -0.5x + 0.5x

Combine like terms: -0.5x + 0.5x = 0.0
21 + 0.5x = 59.5 + 0.0
21 + 0.5x = 59.5

Add '-21' to each side of the equation.
21 + -21 + 0.5x = 59.5 + -21

Combine like terms: 21 + -21 = 0
0 + 0.5x = 59.5 + -21
0.5x = 59.5 + -21

Combine like terms: 59.5 + -21 = 38.5
0.5x = 38.5

Divide each side by '0.5'.
x = 77

Simplifying
x = 77

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