7[5x+9]=18-[x+9]

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Solution for 7[5x+9]=18-[x+9] equation:


Simplifying
7[5x + 9] = 18 + -1[x + 9]

Reorder the terms:
7[9 + 5x] = 18 + -1[x + 9]
[9 * 7 + 5x * 7] = 18 + -1[x + 9]
[63 + 35x] = 18 + -1[x + 9]

Reorder the terms:
63 + 35x = 18 + -1[9 + x]
63 + 35x = 18 + [9 * -1 + x * -1]
63 + 35x = 18 + [-9 + -1x]

Combine like terms: 18 + -9 = 9
63 + 35x = 9 + -1x

Solving
63 + 35x = 9 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
63 + 35x + x = 9 + -1x + x

Combine like terms: 35x + x = 36x
63 + 36x = 9 + -1x + x

Combine like terms: -1x + x = 0
63 + 36x = 9 + 0
63 + 36x = 9

Add '-63' to each side of the equation.
63 + -63 + 36x = 9 + -63

Combine like terms: 63 + -63 = 0
0 + 36x = 9 + -63
36x = 9 + -63

Combine like terms: 9 + -63 = -54
36x = -54

Divide each side by '36'.
x = -1.5

Simplifying
x = -1.5

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