x(a+3b)=

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Solution for x(a+3b)= equation: 


Simplifying
x(a + 3b) = 0
(a * x + 3b * x) = 0
(ax + 3bx) = 0

Solving
ax + 3bx = 0

Solving for variable 'a'.

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

Add '-3bx' to each side of the equation.
ax + 3bx + -3bx = 0 + -3bx

Combine like terms: 3bx + -3bx = 0
ax + 0 = 0 + -3bx
ax = 0 + -3bx
Remove the zero:
ax = -3bx

Divide each side by 'x'.
a = -3b

Simplifying
a = -3b

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