3(4x+5y)+7(3y)=

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


Simplifying
3(4x + 5y) + 7(3y) = 0
(4x * 3 + 5y * 3) + 7(3y) = 0
(12x + 15y) + 7(3y) = 0

Remove parenthesis around (3y)
12x + 15y + 7 * 3y = 0

Multiply 7 * 3
12x + 15y + 21y = 0

Combine like terms: 15y + 21y = 36y
12x + 36y = 0

Solving
12x + 36y = 0

Solving for variable 'x'.

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

Add '-36y' to each side of the equation.
12x + 36y + -36y = 0 + -36y

Combine like terms: 36y + -36y = 0
12x + 0 = 0 + -36y
12x = 0 + -36y
Remove the zero:
12x = -36y

Divide each side by '12'.
x = -3y

Simplifying
x = -3y

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