13-3(7x+3)=9x+8(x-9)

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Solution for 13-3(7x+3)=9x+8(x-9) equation:


Simplifying
13 + -3(7x + 3) = 9x + 8(x + -9)

Reorder the terms:
13 + -3(3 + 7x) = 9x + 8(x + -9)
13 + (3 * -3 + 7x * -3) = 9x + 8(x + -9)
13 + (-9 + -21x) = 9x + 8(x + -9)

Combine like terms: 13 + -9 = 4
4 + -21x = 9x + 8(x + -9)

Reorder the terms:
4 + -21x = 9x + 8(-9 + x)
4 + -21x = 9x + (-9 * 8 + x * 8)
4 + -21x = 9x + (-72 + 8x)

Reorder the terms:
4 + -21x = -72 + 9x + 8x

Combine like terms: 9x + 8x = 17x
4 + -21x = -72 + 17x

Solving
4 + -21x = -72 + 17x

Solving for variable 'x'.

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

Add '-17x' to each side of the equation.
4 + -21x + -17x = -72 + 17x + -17x

Combine like terms: -21x + -17x = -38x
4 + -38x = -72 + 17x + -17x

Combine like terms: 17x + -17x = 0
4 + -38x = -72 + 0
4 + -38x = -72

Add '-4' to each side of the equation.
4 + -4 + -38x = -72 + -4

Combine like terms: 4 + -4 = 0
0 + -38x = -72 + -4
-38x = -72 + -4

Combine like terms: -72 + -4 = -76
-38x = -76

Divide each side by '-38'.
x = 2

Simplifying
x = 2

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