(7x+3)-(4x-8)=42

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


Simplifying
(7x + 3) + -1(4x + -8) = 42

Reorder the terms:
(3 + 7x) + -1(4x + -8) = 42

Remove parenthesis around (3 + 7x)
3 + 7x + -1(4x + -8) = 42

Reorder the terms:
3 + 7x + -1(-8 + 4x) = 42
3 + 7x + (-8 * -1 + 4x * -1) = 42
3 + 7x + (8 + -4x) = 42

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

Combine like terms: 3 + 8 = 11
11 + 7x + -4x = 42

Combine like terms: 7x + -4x = 3x
11 + 3x = 42

Solving
11 + 3x = 42

Solving for variable 'x'.

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

Add '-11' to each side of the equation.
11 + -11 + 3x = 42 + -11

Combine like terms: 11 + -11 = 0
0 + 3x = 42 + -11
3x = 42 + -11

Combine like terms: 42 + -11 = 31
3x = 31

Divide each side by '3'.
x = 10.33333333

Simplifying
x = 10.33333333

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