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

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


Simplifying
3x + 9x + -1(7x + 7) = 0

Reorder the terms:
3x + 9x + -1(7 + 7x) = 0
3x + 9x + (7 * -1 + 7x * -1) = 0
3x + 9x + (-7 + -7x) = 0

Reorder the terms:
-7 + 3x + 9x + -7x = 0

Combine like terms: 3x + 9x = 12x
-7 + 12x + -7x = 0

Combine like terms: 12x + -7x = 5x
-7 + 5x = 0

Solving
-7 + 5x = 0

Solving for variable 'x'.

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

Add '7' to each side of the equation.
-7 + 7 + 5x = 0 + 7

Combine like terms: -7 + 7 = 0
0 + 5x = 0 + 7
5x = 0 + 7

Combine like terms: 0 + 7 = 7
5x = 7

Divide each side by '5'.
x = 1.4

Simplifying
x = 1.4

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