7x+-1(8x+-1(5x+30))=12

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Solution for 7x+-1(8x+-1(5x+30))=12 equation:


Simplifying
7x + -1(8x + -1(5x + 30)) = 12

Reorder the terms:
7x + -1(8x + -1(30 + 5x)) = 12
7x + -1(8x + (30 * -1 + 5x * -1)) = 12
7x + -1(8x + (-30 + -5x)) = 12

Reorder the terms:
7x + -1(-30 + 8x + -5x) = 12

Combine like terms: 8x + -5x = 3x
7x + -1(-30 + 3x) = 12
7x + (-30 * -1 + 3x * -1) = 12
7x + (30 + -3x) = 12

Reorder the terms:
30 + 7x + -3x = 12

Combine like terms: 7x + -3x = 4x
30 + 4x = 12

Solving
30 + 4x = 12

Solving for variable 'x'.

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

Add '-30' to each side of the equation.
30 + -30 + 4x = 12 + -30

Combine like terms: 30 + -30 = 0
0 + 4x = 12 + -30
4x = 12 + -30

Combine like terms: 12 + -30 = -18
4x = -18

Divide each side by '4'.
x = -4.5

Simplifying
x = -4.5

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