30x-3(3x+1)=2(7x+9)

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Solution for 30x-3(3x+1)=2(7x+9) equation:


Simplifying
30x + -3(3x + 1) = 2(7x + 9)

Reorder the terms:
30x + -3(1 + 3x) = 2(7x + 9)
30x + (1 * -3 + 3x * -3) = 2(7x + 9)
30x + (-3 + -9x) = 2(7x + 9)

Reorder the terms:
-3 + 30x + -9x = 2(7x + 9)

Combine like terms: 30x + -9x = 21x
-3 + 21x = 2(7x + 9)

Reorder the terms:
-3 + 21x = 2(9 + 7x)
-3 + 21x = (9 * 2 + 7x * 2)
-3 + 21x = (18 + 14x)

Solving
-3 + 21x = 18 + 14x

Solving for variable 'x'.

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

Add '-14x' to each side of the equation.
-3 + 21x + -14x = 18 + 14x + -14x

Combine like terms: 21x + -14x = 7x
-3 + 7x = 18 + 14x + -14x

Combine like terms: 14x + -14x = 0
-3 + 7x = 18 + 0
-3 + 7x = 18

Add '3' to each side of the equation.
-3 + 3 + 7x = 18 + 3

Combine like terms: -3 + 3 = 0
0 + 7x = 18 + 3
7x = 18 + 3

Combine like terms: 18 + 3 = 21
7x = 21

Divide each side by '7'.
x = 3

Simplifying
x = 3

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