3(5+x)+4x=

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


Simplifying
3(5 + x) + 4x = 0
(5 * 3 + x * 3) + 4x = 0
(15 + 3x) + 4x = 0

Combine like terms: 3x + 4x = 7x
15 + 7x = 0

Solving
15 + 7x = 0

Solving for variable 'x'.

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

Add '-15' to each side of the equation.
15 + -15 + 7x = 0 + -15

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

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

Divide each side by '7'.
x = -2.142857143

Simplifying
x = -2.142857143

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