42x-49+12x-20-5x-78=0

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Solution for 42x-49+12x-20-5x-78=0 equation:


Simplifying
42x + -49 + 12x + -20 + -5x + -78 = 0

Reorder the terms:
-49 + -20 + -78 + 42x + 12x + -5x = 0

Combine like terms: -49 + -20 = -69
-69 + -78 + 42x + 12x + -5x = 0

Combine like terms: -69 + -78 = -147
-147 + 42x + 12x + -5x = 0

Combine like terms: 42x + 12x = 54x
-147 + 54x + -5x = 0

Combine like terms: 54x + -5x = 49x
-147 + 49x = 0

Solving
-147 + 49x = 0

Solving for variable 'x'.

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

Add '147' to each side of the equation.
-147 + 147 + 49x = 0 + 147

Combine like terms: -147 + 147 = 0
0 + 49x = 0 + 147
49x = 0 + 147

Combine like terms: 0 + 147 = 147
49x = 147

Divide each side by '49'.
x = 3

Simplifying
x = 3

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