3(3x+1)=7(x+3)

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Solution for 3(3x+1)=7(x+3) equation:


Simplifying
3(3x + 1) = 7(x + 3)

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

Reorder the terms:
3 + 9x = 7(3 + x)
3 + 9x = (3 * 7 + x * 7)
3 + 9x = (21 + 7x)

Solving
3 + 9x = 21 + 7x

Solving for variable 'x'.

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

Add '-7x' to each side of the equation.
3 + 9x + -7x = 21 + 7x + -7x

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

Combine like terms: 7x + -7x = 0
3 + 2x = 21 + 0
3 + 2x = 21

Add '-3' to each side of the equation.
3 + -3 + 2x = 21 + -3

Combine like terms: 3 + -3 = 0
0 + 2x = 21 + -3
2x = 21 + -3

Combine like terms: 21 + -3 = 18
2x = 18

Divide each side by '2'.
x = 9

Simplifying
x = 9

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