-9x+(-48x)-(-9x)-(-42x)-21=45

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Solution for -9x+(-48x)-(-9x)-(-42x)-21=45 equation:


Simplifying
-9x + (-48x) + -1(-9x) + -1(-42x) + -21 = 45

Remove parenthesis around (-9x)
-9x + (-48x) + -1 * -9x + -1(-42x) + -21 = 45

Multiply -1 * -9
-9x + (-48x) + 9x + -1(-42x) + -21 = 45

Remove parenthesis around (-42x)
-9x + (-48x) + 9x + -1 * -42x + -21 = 45

Multiply -1 * -42
-9x + (-48x) + 9x + 42x + -21 = 45

Reorder the terms:
-21 + -9x + (-48x) + 9x + 42x = 45

Combine like terms: -9x + (-48x) = -57x
-21 + -57x + 9x + 42x = 45

Combine like terms: -57x + 9x = -48x
-21 + -48x + 42x = 45

Combine like terms: -48x + 42x = -6x
-21 + -6x = 45

Solving
-21 + -6x = 45

Solving for variable 'x'.

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

Add '21' to each side of the equation.
-21 + 21 + -6x = 45 + 21

Combine like terms: -21 + 21 = 0
0 + -6x = 45 + 21
-6x = 45 + 21

Combine like terms: 45 + 21 = 66
-6x = 66

Divide each side by '-6'.
x = -11

Simplifying
x = -11

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