3x-(-x)+1=7

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Solution for 3x-(-x)+1=7 equation:


Simplifying
3x + -1(-1x) + 1 = 7

Remove parenthesis around (-1x)
3x + -1 * -1x + 1 = 7

Multiply -1 * -1
3x + 1x + 1 = 7

Reorder the terms:
1 + 3x + 1x = 7

Combine like terms: 3x + 1x = 4x
1 + 4x = 7

Solving
1 + 4x = 7

Solving for variable 'x'.

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

Add '-1' to each side of the equation.
1 + -1 + 4x = 7 + -1

Combine like terms: 1 + -1 = 0
0 + 4x = 7 + -1
4x = 7 + -1

Combine like terms: 7 + -1 = 6
4x = 6

Divide each side by '4'.
x = 1.5

Simplifying
x = 1.5

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