21=5-2.3x-2.7x

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Solution for 21=5-2.3x-2.7x equation:


Simplifying
21 = 5 + -2.3x + -2.7x

Combine like terms: -2.3x + -2.7x = -5x
21 = 5 + -5x

Solving
21 = 5 + -5x

Solving for variable 'x'.

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

Add '5x' to each side of the equation.
21 + 5x = 5 + -5x + 5x

Combine like terms: -5x + 5x = 0
21 + 5x = 5 + 0
21 + 5x = 5

Add '-21' to each side of the equation.
21 + -21 + 5x = 5 + -21

Combine like terms: 21 + -21 = 0
0 + 5x = 5 + -21
5x = 5 + -21

Combine like terms: 5 + -21 = -16
5x = -16

Divide each side by '5'.
x = -3.2

Simplifying
x = -3.2

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