-5(x-3y)=-21

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Solution for -5(x-3y)=-21 equation: 


Simplifying
-5(x + -3y) = -21
(x * -5 + -3y * -5) = -21
(-5x + 15y) = -21

Solving
-5x + 15y = -21

Solving for variable 'x'.

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

Add '-15y' to each side of the equation.
-5x + 15y + -15y = -21 + -15y

Combine like terms: 15y + -15y = 0
-5x + 0 = -21 + -15y
-5x = -21 + -15y

Divide each side by '-5'.
x = 4.2 + 3y

Simplifying
x = 4.2 + 3y

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