3(4x-7)-2(x+9)=y

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Solution for 3(4x-7)-2(x+9)=y equation: 


Simplifying
3(4x + -7) + -2(x + 9) = y

Reorder the terms:
3(-7 + 4x) + -2(x + 9) = y
(-7 * 3 + 4x * 3) + -2(x + 9) = y
(-21 + 12x) + -2(x + 9) = y

Reorder the terms:
-21 + 12x + -2(9 + x) = y
-21 + 12x + (9 * -2 + x * -2) = y
-21 + 12x + (-18 + -2x) = y

Reorder the terms:
-21 + -18 + 12x + -2x = y

Combine like terms: -21 + -18 = -39
-39 + 12x + -2x = y

Combine like terms: 12x + -2x = 10x
-39 + 10x = y

Solving
-39 + 10x = y

Solving for variable 'x'.

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

Add '39' to each side of the equation.
-39 + 39 + 10x = 39 + y

Combine like terms: -39 + 39 = 0
0 + 10x = 39 + y
10x = 39 + y

Divide each side by '10'.
x = 3.9 + 0.1y

Simplifying
x = 3.9 + 0.1y

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