31.40=2*3.14(x+3)

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Solution for 31.40=2*3.14(x+3) equation: 


Simplifying
31.40 = 2 * 3.14(x + 3)

Reorder the terms:
31.40 = 2 * 3.14(3 + x)

Multiply 2 * 3.14
31.40 = 6.28(3 + x)
31.40 = (3 * 6.28 + x * 6.28)
31.40 = (18.84 + 6.28x)

Solving
31.40 = 18.84 + 6.28x

Solving for variable 'x'.

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

Add '-6.28x' to each side of the equation.
31.40 + -6.28x = 18.84 + 6.28x + -6.28x

Combine like terms: 6.28x + -6.28x = 0.00
31.40 + -6.28x = 18.84 + 0.00
31.40 + -6.28x = 18.84

Add '-31.40' to each side of the equation.
31.40 + -31.40 + -6.28x = 18.84 + -31.40

Combine like terms: 31.40 + -31.40 = 0.00
0.00 + -6.28x = 18.84 + -31.40
-6.28x = 18.84 + -31.40

Combine like terms: 18.84 + -31.40 = -12.56
-6.28x = -12.56

Divide each side by '-6.28'.
x = 2

Simplifying
x = 2

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