20.8=0.5(x+8.7)4

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Solution for 20.8=0.5(x+8.7)4 equation: 


Simplifying
20.8 = 0.5(x + 8.7) * 4

Reorder the terms:
20.8 = 0.5(8.7 + x) * 4

Reorder the terms for easier multiplication:
20.8 = 0.5 * 4(8.7 + x)

Multiply 0.5 * 4
20.8 = 2(8.7 + x)
20.8 = (8.7 * 2 + x * 2)
20.8 = (17.4 + 2x)

Solving
20.8 = 17.4 + 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.
20.8 + -2x = 17.4 + 2x + -2x

Combine like terms: 2x + -2x = 0
20.8 + -2x = 17.4 + 0
20.8 + -2x = 17.4

Add '-20.8' to each side of the equation.
20.8 + -20.8 + -2x = 17.4 + -20.8

Combine like terms: 20.8 + -20.8 = 0.0
0.0 + -2x = 17.4 + -20.8
-2x = 17.4 + -20.8

Combine like terms: 17.4 + -20.8 = -3.4
-2x = -3.4

Divide each side by '-2'.
x = 1.7

Simplifying
x = 1.7

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