20.5=7(4.5x-3)

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Solution for 20.5=7(4.5x-3) equation:


Simplifying
20.5 = 7(4.5x + -3)

Reorder the terms:
20.5 = 7(-3 + 4.5x)
20.5 = (-3 * 7 + 4.5x * 7)
20.5 = (-21 + 31.5x)

Solving
20.5 = -21 + 31.5x

Solving for variable 'x'.

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

Add '-31.5x' to each side of the equation.
20.5 + -31.5x = -21 + 31.5x + -31.5x

Combine like terms: 31.5x + -31.5x = 0.0
20.5 + -31.5x = -21 + 0.0
20.5 + -31.5x = -21

Add '-20.5' to each side of the equation.
20.5 + -20.5 + -31.5x = -21 + -20.5

Combine like terms: 20.5 + -20.5 = 0.0
0.0 + -31.5x = -21 + -20.5
-31.5x = -21 + -20.5

Combine like terms: -21 + -20.5 = -41.5
-31.5x = -41.5

Divide each side by '-31.5'.
x = 1.317460317

Simplifying
x = 1.317460317

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