3x+9x-7=3(4x+5)

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Solution for 3x+9x-7=3(4x+5) equation:


Simplifying
3x + 9x + -7 = 3(4x + 5)

Reorder the terms:
-7 + 3x + 9x = 3(4x + 5)

Combine like terms: 3x + 9x = 12x
-7 + 12x = 3(4x + 5)

Reorder the terms:
-7 + 12x = 3(5 + 4x)
-7 + 12x = (5 * 3 + 4x * 3)
-7 + 12x = (15 + 12x)

Add '-12x' to each side of the equation.
-7 + 12x + -12x = 15 + 12x + -12x

Combine like terms: 12x + -12x = 0
-7 + 0 = 15 + 12x + -12x
-7 = 15 + 12x + -12x

Combine like terms: 12x + -12x = 0
-7 = 15 + 0
-7 = 15

Solving
-7 = 15

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

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