40=8x+13x-2

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Solution for 40=8x+13x-2 equation:


Simplifying
40 = 8x + 13x + -2

Reorder the terms:
40 = -2 + 8x + 13x

Combine like terms: 8x + 13x = 21x
40 = -2 + 21x

Solving
40 = -2 + 21x

Solving for variable 'x'.

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

Add '-21x' to each side of the equation.
40 + -21x = -2 + 21x + -21x

Combine like terms: 21x + -21x = 0
40 + -21x = -2 + 0
40 + -21x = -2

Add '-40' to each side of the equation.
40 + -40 + -21x = -2 + -40

Combine like terms: 40 + -40 = 0
0 + -21x = -2 + -40
-21x = -2 + -40

Combine like terms: -2 + -40 = -42
-21x = -42

Divide each side by '-21'.
x = 2

Simplifying
x = 2

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