7(3x+4)=4(x+3)-18

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Solution for 7(3x+4)=4(x+3)-18 equation:


Simplifying
7(3x + 4) = 4(x + 3) + -18

Reorder the terms:
7(4 + 3x) = 4(x + 3) + -18
(4 * 7 + 3x * 7) = 4(x + 3) + -18
(28 + 21x) = 4(x + 3) + -18

Reorder the terms:
28 + 21x = 4(3 + x) + -18
28 + 21x = (3 * 4 + x * 4) + -18
28 + 21x = (12 + 4x) + -18

Reorder the terms:
28 + 21x = 12 + -18 + 4x

Combine like terms: 12 + -18 = -6
28 + 21x = -6 + 4x

Solving
28 + 21x = -6 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
28 + 21x + -4x = -6 + 4x + -4x

Combine like terms: 21x + -4x = 17x
28 + 17x = -6 + 4x + -4x

Combine like terms: 4x + -4x = 0
28 + 17x = -6 + 0
28 + 17x = -6

Add '-28' to each side of the equation.
28 + -28 + 17x = -6 + -28

Combine like terms: 28 + -28 = 0
0 + 17x = -6 + -28
17x = -6 + -28

Combine like terms: -6 + -28 = -34
17x = -34

Divide each side by '17'.
x = -2

Simplifying
x = -2

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