3(-6x+3y+4)=21

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Solution for 3(-6x+3y+4)=21 equation:


Simplifying
3(-6x + 3y + 4) = 21

Reorder the terms:
3(4 + -6x + 3y) = 21
(4 * 3 + -6x * 3 + 3y * 3) = 21
(12 + -18x + 9y) = 21

Solving
12 + -18x + 9y = 21

Solving for variable 'x'.

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

Add '-12' to each side of the equation.
12 + -18x + -12 + 9y = 21 + -12

Reorder the terms:
12 + -12 + -18x + 9y = 21 + -12

Combine like terms: 12 + -12 = 0
0 + -18x + 9y = 21 + -12
-18x + 9y = 21 + -12

Combine like terms: 21 + -12 = 9
-18x + 9y = 9

Add '-9y' to each side of the equation.
-18x + 9y + -9y = 9 + -9y

Combine like terms: 9y + -9y = 0
-18x + 0 = 9 + -9y
-18x = 9 + -9y

Divide each side by '-18'.
x = -0.5 + 0.5y

Simplifying
x = -0.5 + 0.5y

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