42+8x+13=7

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Solution for 42+8x+13=7 equation: 


Simplifying
42 + 8x + 13 = 7

Reorder the terms:
42 + 13 + 8x = 7

Combine like terms: 42 + 13 = 55
55 + 8x = 7

Solving
55 + 8x = 7

Solving for variable 'x'.

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

Add '-55' to each side of the equation.
55 + -55 + 8x = 7 + -55

Combine like terms: 55 + -55 = 0
0 + 8x = 7 + -55
8x = 7 + -55

Combine like terms: 7 + -55 = -48
8x = -48

Divide each side by '8'.
x = -6

Simplifying
x = -6

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