7x+3-4x-8=42

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Solution for 7x+3-4x-8=42 equation:


Simplifying
7x + 3 + -4x + -8 = 42

Reorder the terms:
3 + -8 + 7x + -4x = 42

Combine like terms: 3 + -8 = -5
-5 + 7x + -4x = 42

Combine like terms: 7x + -4x = 3x
-5 + 3x = 42

Solving
-5 + 3x = 42

Solving for variable 'x'.

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

Add '5' to each side of the equation.
-5 + 5 + 3x = 42 + 5

Combine like terms: -5 + 5 = 0
0 + 3x = 42 + 5
3x = 42 + 5

Combine like terms: 42 + 5 = 47
3x = 47

Divide each side by '3'.
x = 15.66666667

Simplifying
x = 15.66666667

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